Abbreviations
Abbreviations
| abbreviation | description |
|---|---|
| EHCM | Electrohydraulic control module |
| KFZ | Motor vehicle |
| PM | Pump motor |
| TMF | Door module, driver side |
| VZ | Electronic ignition timing with static distribution |
| MECH. | Mechanical |
| AHV | Trailer brake valve |
| RDW | Rest of the world (group in exhaust-gas classification) |
| CATARC | China Automobile Technical and Research Center |
| TRACS | Traction control system (Volvo) |
| LUN | Jetronic, intermittent, with USA functionality, n=version, usually proper name |
| EVE | Electronic distributor injection system (special engine control) |
| YRS | Yaw rate sensor. Component of ESP system |
| Q1 | Fuel quantity for cylinder 1. Similarly Q2, Q3, etc. |
| T-OVER | Overflow temperature |
| LCD | Liquid crystal display, usually proper name |
| VFD | Vacuum fluorescence display |
| UG | Lower limit Lower tolerance limit |
| MID | Multifunction information display |
| SLS | Secondary-air system |
| MMV | Quantity solenoid valve |
| VANOS | Variable camshaft timing |
| VRM | Valve feedback |
| EMS | Electronic engine control, proper name |
| BM | Reference mark |
| WT | Heat exchanger |
| DMM | Digital multimeter |
| EFP | Electronic accelerator pedal, proper name |
| CR | Common Rail. See CRS. |
| D3 | German exhaust-gas standard, parallel to European standard. Corresponds largely to EU3. See EU3 and EURO3. |
| ZAS | Cylinder shutoff |
| FMI | Failure Mode Indicator |
| ISC | Idle speed control or Idle compensation |
| MM | Millimeter, physical unit |
| STI | Self-test input signal |
| SIA | Service interval indicator. Shows the driver that oil change or annual inspection is required, for example. See also WIV. |
| PAS | Peripheral airbag sensor (side airbag) |
| EEPROM | Electrically erasable programmable read-only memory, proper name |
| ELSA | Electronic service information system. VW system for authorised workshops (garages). Comprises the components ELFI, ELWIS, and ETKA. |
| PNG | Papua New Guinea |
| NAS | Auxiliary drive switch |
| RUEF | Retrofit vehicle |
| TPS | Throttle position sensor |
| IAC | Idle air control, i.e. idle speed control, for injection engines |
| ZA | Ignition suppression or South Africa |
| MEN | Monitor engine (output line for engine diagnostic data) |
| EECS | Fuel vapour emission control system |
| DEF | Diesel Exhaust Fluid |
| BCM | Body control module (Opel and GM) |
| TMOT | Engine temperature (in °C), usually determined from coolant |
| EHAB | Electrohydraulic shutoff |
| EZS | Electronic ignition switch |
| TD | TD: Time division, engine load signal tD: Transistor speed signal, square-wave signal supplying RPM for other systems such as transmission control |
| SUS | Slip threshold switchover |
| LRD | Load response drive, alternative multifunction control |
| LL | Idle, engine operating state or Left-hand drive or LL division, triangular division of brake circuits: 2 circuits in front, one in rear. |
| BZM | Reference mark |
| MJ | Mono-Jetronic, usually proper name or Model year |
| EDS | Electronic differential lock, usually proper name |
| EVAP | Fuel vapor emission control |
| EUP | Electronic unit pump, diesel pump of pump line nozzle system (diesel injection) |
| DI/DIST | Distributor type |
| SIR | Seat electrical system, right. |
| LC | Low compression, or Version with low compression ratio |
| BSA | Brake system analysis, product name for brake test stand (Bosch) |
| EBV | EGR Bypass Valve (SAE J1930) |
| F | France |
| NHU | Navigation head unit. Opel navigation control unit. |
| EBV | Electronic brake force distribution (see also EBD and EBC) |
| DSE | Thermal-expansion material element, expands or contracts when heated |
| IFZ | Infrared central locking |
| SCS | Stability control system. Simplified form of ESP (Mitsubishi). Prevents vehicle tilting or skidding. |
| NMOG | Non-Methane Organic Gases |
| B+ | Battery positive voltage |
| MM3/H | Mm³/H: cubic millimeters per stroke, unit |
| AMIC | Automotive Multimedia Interface Collaboration, Gremium zur Entwicklung eines Multimediastandards, besteht im wesentlichen aus führenden Automobilherstellern |
| NIC | Nicaragua |
| MPV | Multi-purpose vehicles (Mazda). Comprises the group of vans and small panel trucks. |
| PA | Pa: pascal, physical unit of pressure. See also HPA, KPA, and MPA |
| ESN | Engine Serial Number |
| BEV | Battery electric vehicle |
| SCU | Sensor and control unit. Control unit with integrated radar sensor, main component of ACC system. |
| ERW | Energy reserve with voltage converter |
| FDS | Ford diagnostic system |
| MAL | Malaysia |
| EPB | Electropneumatic brake |
| ISIS | Intelligent safety system. System with multiple airbags, pyrotechnically triggered headrests, seat-belt tensioners and intelligent electronics (BMW) |
| AMR | Drive torque control |
| COMAND | Cockpit management and data systems. System for data exchange and driver information management. |
| CFG | Configuration |
| KM | Small engine |
| EURO4 | European exhaust-gas standard, valid from 2005 (levels: HC 0.1, CO 1.0, NOx 0.08) |
| SG | Control unit |
| UN | United Nations |
| AT | Automatic transmission |
| SENSOR | Automotive sensors are electronic devices that detect and measure various physical parameters in a vehicle, such as speed, pressure, and temperature, and transmit this data to the car's ECU, usually has 3 pins, valves - 2 pins. |
| EU3 | European exhaust-gas standard, valid from 2000 (levels: HC 0.2, CO 2.3, NOx 0.15) |
| PDC | Park distance control. Parking aid, often proper name, or Pre-drive check (testing of EHB systems) |
| GBA | Seat belt positioner drive |
| SKF | Spike characteristic. Relates to Porsche transmission controls. |
| IAT | Intake Air Temperature |
| MG/H | Milligrams per stroke, unit |
| RP | In-line pump, or Philippines |
| EBCV | Electrical auxiliary air control valve |
| DFHL | Speed sensor, left rear |
| TIPTRONIC | Porsche or VW electronic transmission control. The control can be operated via a small device on the steering wheel. |
| EO | Engine Out |
| MV | Millivolt, physical unit |
| FTCO | Flat tachograph (new, flat design), Mercedes |
| DV | Pressure supply, or Throttle device |
| FGB/GBA | Speed limiter / speed limiting system, usually proper name |
| BTS | Battery disconnect switch (Mercedes) |
| HCCI | Homogeneous Charge Compression Ignition |
| TPM | Tyre Pressure Monitoring |
| WHA | Water-side automatic heater |
| PB | Pb: chemical symbol for lead (Latin: plumbum) |
| UQS | Urea Quality Sensor |
| ELV | Electrical air valve, or Electronic steering or steering-column lock. See also ESL. |
| EGO | Exhaust Gas Oxygen Sensor, unbeheizte Lambdasonde |
| SMM&T | Society of Motor Manufacturers and Traders |
| PT | Power train |
| VDA | German Automobile Manufacturers Association (Verband der deutschen Automobilindustrie) |
| PTO | Power Takeoff |
| PRG | Program |
| EAK | Kenya |
| TS | Temperature switch or Twin spark, double-spark ignition (Alfa Romeo) |
| RMI | Repair and Maintenance Information |
| WR-HO2S | Wide Range Heated Oxygen Sensor |
| KWH | Kilowatt-hours, physical unit |
| EGE | Electronic air dryer unit |
| RSD | Backflow throttle |
| SBS | Speech-based operation system (Porsche designation) |
| TSZ-I | Transistor coil ignition with inductive sensor |
| PSI | Pounds per square inch, physical unit |
| UDB | Vacuum limiter |
| I2 | Incremental system with two sensors |
| RCH | Chile |
| P | Pressure, or Power train (used with OBD error codes, for example), or Portugal |
| GR | Gr: large Gr: Group GR: Gas retention, or Greece |
| KSV | Cold-start valve |
| FH | Power window |
| FTP | Federal Test Procedure |
| FBA | Parking-brake system (usually hand brake) |
| WE | Water injection |
| KPN | Motronic (load detection occurs via intake manifold pressure, n=Motronic version, usually proper name) |
| WSM | Wiper motor |
| OHC | Overhead camshaft. Camshaft situated above the cylinder head. Often used in engine designations. |
| DSG | RPM target value sensor |
| TC | Turbocharger (SAE J1930) |
| DLK | Dynamic steering correction |
| DPHI | Dphi, delta phi, difference angle. See also PHI. |
| SAT | Siemens adaptive transmission control |
| CNCA | Certification and Accreditation Administration |
| PRS | Programmed restraint system. Reduces the seat-belt tension and thus upper-body injuries (Renault) |
| RF | Radio frequency, radio signal |
| CV | Check valve, shutoff valve, throttling non-return valve |
| TEV | Tank ventilation valve or Thermostatic expansion valve (heating/air conditioning) |
| MEP | Mean effective pressure |
| CS | Charge sustaining (SAE J1930) |
| EZ | Electronic ignition, usually proper name |
| NOX | NOx: Nitrogen oxides |
| AGRV | EGR ventilation |
| EWMA | Exponential weighted moving average, misfire detection during last 10 driving cycles |
| HHC | Hill Holder Control, ESP system component |
| NKW | Lorry (truck) |
| HZ | Hertz, physical unit |
| BFL | Brake fluid level |
| SD | Intake manifold pressure, or Sunroof, or Injection duration, or Control unit diagnosis |
| TIM | Time impulse |
| EKE | Electronic fuel injection, proper name |
| RAIL | Common Rail, high-pressure distribution line with Common Rail diesel systems |
| EMV | Electromagnetic compatibility (EMC) |
| UBF | Lower control panel. Near the gearshift lever or below the radio, some vehicles have switches or buttons, such as for the rear-window defogger. These elements together comprise a control panel, which is referred to as the lower control panel to distinguish it from another control panel on or above the dashboard. |
| Z.Z. | Currently, at the moment |
| ECD | Electronically controlled deceleration |
| CH | Hydrocarbon (normally HC). In conjunction with exhaust-gas systems, HC is understood to be the portion of unburned fuel in the exhaust, or Switzerland (Confoederatio Helvetica) |
| TSG | Tank level sensor or Door control unit |
| RWD | Rear wheel drive |
| RDK | Tire pressure check system, usually proper name |
| DISA | Differential intake manifold system (switchable, variable-length intake manifold) |
| AI | Air injection |
| TMC | Traffic message channel |
| RDP | Reductant Delivery Performance |
| MDR | Membrane pressure control |
| FKT | Function |
| FZ | Vehicle |
| WTF | Water temperature sensor |
| QM | Quality management |
| HBZ | Master brake cylinder |
| VIM | Vehicle immobilizer |
| SAM | Safety (or signal detection) and triggering module. Designation for Mercedes control unit. |
| SCO3 | Supplemental Federal Test Procedure with air conditioning |
| FBG | Start-of-delivery sensor |
| VZ-K | Electronic ignition timing with static distribution and knock control |
| EGRBV | Exhaust Gas Recirculation Bypass Valve |
| BKR | Braking force control |
| LLR | Idle control (diesel systems) |
| KWT | Kuwait |
| KVR | Fuel distributor tube |
| PA | Parking assistant |
| SIR | Service Information Rule (SAE J1930) |
| ENR | Electronic level control |
| CARIN | Autopilot system, Mercedes |
| CRC | Cyclic redundancy check. Method for generating a checksum, proper name |
| HDC | Hill descent control. Special system that maintains speed downhill. Works using brake intervention at about 5 mph (8 km/h) (BMW and Rover offroad vehicles) |
| OZA | Oxygen/zirconium emissions sensor. Zirconium oxide sensor. See also OTA. |
| TMS | Telematic system |
| BFS | Passenger side |
| QSF | Average function |
| DOC | Diesel Oxidation Catalyst |
| ANC | Active noise control. System actively influences the intake noise, reducing it by about 15 dB. |
| DLC | Data link connector. Diagnosis connection |
| NMOT | Engine RPM |
| I1 | Incremental system with one sensor |
| SVRL | Single value RPM limiter |
| CC | Cruise control. See also ACC |
| HEV | Hybrid Electric Vehicle (SAE J1930) |
| PNP | Park/Neutral Position |
| FCKW | Chlorofluorocarbon (CFC). Gaseous chemical compound that destroys the ozone layer. Contained in old refrigerants (R12) for air conditioners. |
| SO2 | Sulphur dioxide. Pungent gas causing respiratory diseases. It is thus an aim to reduce the sulphur content in exhaust gases. |
| ELWIS | Electronic shop information system. Component of the VW ELSA service information system. |
| LEN | Jetronic, intermittent, covers European functionality, n=version, usually proper name |
| ARA | Anti-jerking control |
| ACM | Aftertreatment Control Module |
| GM | Basic module, or Gear motor, or General Motors, proper name (name of vehicle manufacturer) |
| EMC | Electromagnetic compatibility (see also EMV) |
| MI | Malfunction Indicator – European reference for MIL (SAE J1930) |
| TV | Timing valve |
| CVN | Calibration verification number. Part of OBD, contains the checksums for parameter settings, for example. |
| ESP | Electronic stability program, another designation for vehicle-dynamics control (FDR), usually proper name |
| T-COMP | Compression temperature |
| HPA | hectopascal, physical unit |
| HCHO | Formaldehyde |
| ROZ | Research octane number |
| DeNOx | NOx Reduction Function |
| RHO | Greek letter, represents density (kg/m³) |
| SO | Safety switch, normally closed (actuator) |
| SPOUT | Ignition signal (EEC IV) |
| RFP | Return pump |
| FUL | Full UsefunLife – also referred to as EUL (End of UsefunLife) |
| MDV | Medium Duty Vehicle |
| ICC | Intelligent cruise control, Nissan distance control system; see also ACC. |
| CID | Colour Info Display |
| MOT/DME | Digital Motor Electronics (Motronic) |
| THA | Thailand |
| SSA | Automatic start/stop |
| PSP | Power steering pressure |
| SEC | Seconds, physical unit |
| EKM | Electronic clutch management |
| GPS | Global Positioning System, satellite system for locating a vehicle |
| MLD | Mechanical load-peak damping |
| MS | Millisecond, physical unit |
| CMH | Mixture preheating |
| PM | Particulate Matter (SAE J1930) |
| ASM | Asynchronous machine |
| GDV | Constant pressure valve |
| HZ | Master brake cylinder |
| LS | Release switch or Oxygen sensor |
| X | X division. Diagonal division of brake circuits: one circuit for left-front and right-rear, and one circuit for right-front and left-rear. |
| PROG | Programming input |
| L/KM | Liters per kilometer, unit |
| VIS | Variable Intake System (Rover) |
| MMI | Engine torque, actual value or Man-machine interface (Porsche designation) |
| UDS | Unified Diagnostic Services (SAE J1930) |
| TCO | Tachograph (Mercedes) |
| MR | Engine relay or Engine control for ASR |
| DTR | Distronic. Distance control system (Mercedes) |
| AY | Lateral acceleration. A=acceleration, Y=lateral direction |
| HP | Horsepower. To estimate maximum supported power by injectors, you’d need the injector’s flow rate (in cc/min or lb/hr) and you can calculate supported horsepower using this formula: HP = (Injector_Flow_per_min × Number_of_injectors × 60) / (BSFC × Duty_Cycle) |
| MAS | Control unit for engine assembly |
| UNI2 | Additional lines on universal adapter cable, used to read out flash codes or for special purposes |
| AV | Outlet valve or Shutoff valve |
| MIIT | Ministry of Industry and Information Technology |
| L | L: liter, physical unit, or left L: left L-line: unidirectional line between control unit and tester |
| PF1t_swtSrvval_C | Switch to deactivate the particle filter functionality: Switch to reset the EEPROM values (DPF Off) |
| DM | Diagnosis module (SAE J1930) |
| CFV | Clean Fuel Vehicle |
| WAN | Nigeria |
| B | Internal combustion engine (petrol) or Bank or Belgium |
| RDU | Tyre pressure monitoring |
| MVN | Level valve with electronic air-cushioning system |
| STOE | Stop external, external stop switch |
| NWS | Camshaft timing |
| BHKZ | Battery high voltage capacitor ignition |
| PWR | Pulse rectifier |
| DVH | Pressure valve holder |
| SULEV | Super ultra-low emissions vehicle (group in classifying exhaust-emissions levels). See also LEV, NLEV, ULEV, TLEV, and ZEV. |
| AGN | Exhaust-gas aftertreatment |
| BBUS | Body Bus |
| BARO | Barometric Pressure |
| ZDA | Intermediate RPM stop |
| FEN | Failcode Engine. Output line for error codes for engine control unit (Mazda) |
| INJ | Injector. Injection jet or valve in Common Rail diesel system |
| GST | Generic Scan Tool (SAE J1930) |
| SFI | Sequential multipoint fuel injection |
| SPS | Solar position sensor |
| MDA | Engine speed increase |
| WL | Warning lamp |
| CI | Compression Ignition (SAE J1930) |
| SBB | Disc-brake lining |
| LMS | Air-mass sensor |
| RLDM | Rear Left Door Module |
| PPM | Parts-per-million, unit |
| FAP | Accelerator pedal or Vehicle analysis protocol. Log maintained by tester during diagnosis. Can be printed and given to vehicle owner as evidence of repairs performed. |
| NF | Low frequency, or audio frequency |
| PF1t_swtActvSubs_C | Switch for particle filter software activation EEPROM replacement value (DPF Off) |
| MF | Measurement window |
| VSS | Vehicle Speed Sensor (SAE J1930) |
| BES | Base Emission Strategy |
| ISO-EGO | Isolated Exhaust Gas Oxygen Sensor, isolierte unbeheizte Lambdasonde (mit Massekabel) |
| I | Italy |
| LLS | Idle actuator, or Idle switch |
| ASM | Alarm Siren Module |
| ASG | Attachment control unit or Semi-automatic transmission |
| GEN | Generator |
| SCHR | Steps, such as with a stepping motor |
| VE | Distributor injection pump (series designation). See also VP |
| CONAMA | Comision Nacional del Medio Ambiente – Chilean National Commission for the Environment |
| RKS | Tire check system |
| LSP | Longitudinal lock shutoff |
| SCAN TOOL | Tester for reading OBD error codes and other OBD data |
| MPA | MPa: megapascal, physical unit |
| GUS | Belt tensioner or Commonwealth of Independent States (CIS) |
| MDPV | Medium Duty Passenger Vehicle |
| SI-BUS | Safety and information bus system. See also K-CAN and PT-CAN. |
| TES | Thermo-electric switch or tank ventilation system (also referred to as evaporative emission-control regeneration system) |
| PID | Parameter identifier, part of CARB, code for current values or similar parameters, usually proper name |
| KB | Wire harness |
| ASR | Transmission slip control, usually proper name |
| VD | Choke valve |
| BZ | Brake cylinder |
| SV | Injection adjustment (see also SPV) or Servo valve or Start valve |
| BEG | Begrenzungsmenge, Begrenzung - Limiting amount, limit |
| LWR | Headlight vertical aim control |
| IUPR | In-Use Performance Ratio (European reference) |
| GA | Basic adaptation or Guarantee |
| FEC | Front Electrical Centre |
| BKV | Power brakes |
| ODX | Open Diagnostic Exchange |
| PF1t_swtActv_C | Switch to deactivate the particle filter functionality: Switch to reset the EEPROM values (DPF Off) |
| SST | Special tool or self-supporting tyre, tyre which supports itself and features limp-home properties |
| DWA | Theft warning system, BMW-specific designation |
| EFI | Electronic fuel injection, usually proper name |
| KE | Continuous injection, usually proper name |
| ACEA | European Automobile Manufacturers Association |
| ART | Distance-based cruise control |
| SBK | Safety battery terminal. Part of airbag system. In the case of an accident, the battery is rapidly disconnected from the starter cable in order to prevent short circuits and reduce the risk of fire. |
| EZE | Electronic central control unit, usually proper name |
| ATL | Exhaust-gas turbocharger |
| DCU | Diesel control unit or Dosing control unit. Unit for injection of urea (serves to reduce NOx). |
| VVT | Variable Valve Timing |
| WEO | Western Europe except Germany |
| ROV | Rotating high-voltage distribution |
| MIU | Main Instrument Unit |
| MA | Milliampere, physical unit |
| STM | Servomotor |
| MSCAN | Medium-speed controller area network. CAN bus with medium transmission rate (Opel). See also CAN, LSCAN, and HSCAN. |
| WLR | Warmup control |
| AP | Air pump |
| RUE | Soot emission |
| CPV | Constant pressure valve |
| TID | Test identification data or Triple Info Display, driver information system in which certain data and information is displayed |
| MT | Manual transmission or Mechanical transmission or Volume divider |
| D | Diesel engine or Decimal number or Drive (position of automatic-transmission selector lever) or Germany |
| SM | Seat memory, or Stepping motor |
| POTI | Potentiometer, variable resistance |
| T-LASTPUNK | Time of load point |
| EAG | Electronic automatic transmission |
| EO | Executive Officer |
| BC | Blink code |
| AKEK | Automatic child-seat detection, usually integrated into an airbag system |
| ENG | Engine type (code letters), or Engine |
| H | H: hours H: hexadecimal number, or stroke, or Hungary |
| ECU | Electronic control unit, proper name |
| HDF | Remote boot-lid release |
| TMS | Telematics |
| TNA | Signal output for engine speed |
| IVLAN | In Vehicle Local Area Network |
| IHR | Heating control, usually proper name |
| RZEV | Partial Zero Emission Vehicle |
| EHB | Electrohydraulic brake |
| FC | Fault (error) code |
| PBM | Pulse width modulated, signal processing method (prior to sending), usually proper name |
| SOx | Sulfur Oxides |
| Q-OVER | Overflow quantity |
| SOHC | Single overhead camshaft |
| OEDS | Oil pressure switch |
| TCS | Traffic centre service |
| USV | Change-over valve |
| FPR | Fuel pump relay |
| K-RWG | Short-circuit ring sensor |
| TSS | Thermal protection switch |
| BVSV | Bimetallic-controlled vacuum switching valve or Bimetallic vacuum switching valve |
| EDIS | Electronic documentation and information system (Bosch) |
| CCC | China Compulsory Certification |
| EZV | Electronic ignition timing |
| ARR | Exhaust-gas recirculation control |
| ASV | Air switching valve, air intake valve or Trailer control valve |
| MFI-S | Sequential multipoint fuel injection (electronic) |
| KOMP | Component |
| AGRV | Exhaust-gas recirculation valve |
| CDCR | Compact Disc Changer Rear |
| DHK | Nozzle holder combination |
| GSG | Speed sensor |
| KLA | Automatic climate control |
| BSFC | Brake Specific Fuel Consumption is a measure of an engine’s fuel efficiency. It indicates how much fuel (in pounds) the engine consumes to produce one horsepower for one hour. BSFC is expressed in pounds of fuel per horsepower per hour (lb/hp/hr). A lower BSFC value means the engine is more efficient, as it uses less fuel to generate the same power. |
| UT | Bottom dead centre |
| KOER | Key-On Engine Running |
| TSP | Trailer stability program, ESP type system for trailers, designed to prevent trailer skid (Opel) |
| MAEL | Earth (ground) electrode (spark plug) |
| AWR | Distance warning radar |
| FM | Vehicle management |
| RLFS | Fuel supply system without reverse flow |
| TWC | Three-way catalytic converter |
| XE | Extreme economy. Selection option for extremely economical driving with automatic transmissions |
| CLCS | Closed Loop Control Strategy |
| HF | High frequency |
| RO | Romania |
| M/T | Manual Transmission |
| BEA | Bosch Emissions Analysis, product name for exhaust-gas tester (Bosch) |
| WWH-OBD | World Wide Harmonized On-Board Diagnostics |
| FES | Spark energy control |
| KWS | Comfort immobilizer |
| AdBlue | Trademarked name for Diesel Exhaust Fluid |
| T-WARTE | Wait time |
| FIS | Vehicle information system. Product designation (such as FIS 215) |
| UD-S | Vacuum adjustment LATE |
| VM | Adjustment motor or Combustion engine |
| IHE | Integrated hydroelectronics unit. Control electronics, hydraulic generator, and electric motor in Citroen Hydraktiv chassis. |
| VEZ | Fully electronic ignition system |
| UNI1 | Additional lines on universal adapter cable, used to read out flash codes or for special purposes |
| EDIS 4 | EEC IV with distributorless ignition system (Ford) |
| ARD | Active jerking suppression |
| STAE | Start external, external start switch |
| IRS | Interior protection |
| NM | Newton-meter, physical unit |
| MSG | Engine control unit |
| GHD | Housing cover |
| DKV | Throttle valve preset |
| RC | Remote control, or China (Taiwan) |
| FB | Fast burn, rapid spread of flame front or Start-of-delivery, key parameter in diesel injection systems or Remote control |
| VAG | Volkswagen AG, vehicle maker, proper name |
| HAU | Automatic heating |
| ASF | Audi Space Frame, special construction for aluminium frame in Audi A2 and A8 |
| KMA | Continuous volume analysis, product name (Bosch) |
| VA | Vorderachse |
| AWK | Spare piston, used if proper piston does not function |
| ICM | Infotainment Module |
| NA | Auxiliary drive or Netherlands Antilles |
| HRA | Rear window washing system |
| RWAWS | Control-travel evaluation circuit |
| KFB | Fuel filter, petrol or Comfort zone |
| OAL | Office of Administrative Law |
| LOAD | Calculated value of MAF and RPM |
| OORL | Out of Range Low |
| KVD | Fuel evaporation |
| PSE | Pneumatic system electronics, electronically controlled pneumatic system |
| WSKS | Converter clutch switch |
| EZK | Electronic ignition with knock control |
| VAKU-SCH. | Vacuum switch |
| LVW | Loaded Vehicle Weight |
| M3/H | M³/h: cubic meters per hour, unit |
| TFA | Test of radiator fan |
| SWC | Steering Wheel Control |
| AAT | Ambient Air Temperature |
| RHV | Static high-voltage distribution |
| EL-V | Electronically controlled carburetor |
| CRIN | Car radio identification number |
| FE | Delivery units, parameter for determining delivered fuel amount |
| MZV | Microprocessor-controlled ignition adjustment |
| TDI | Turbo diesel injection |
| OC | Open Circuit (SAE J1930) |
| SWA | Headlight washer |
| STFT | Short-term fuel trim (for lambda-parameter correction). See also SFT. |
| AIV | Air injection valve |
| CN6 | China 6 |
| PSM | Porsche Stability Module. Porsche-specific designation for ESP. |
| T-HYBRID | Hybrid temperature |
| HR | Hybrid control, or Right rear, or Croatia |
| EMB | Electromechanical brake |
| C3/B7 | C3/B7 signal (speed signal for trip recorder) |
| OUD | OUD: Without vacuum |
| ABT | Averaging Banking and Trading |
| DAB | Digital audio broadcasting |
| LED | Light-emitting diode, usually proper name |
| ELF | Electronic air cushioning |
| APB | Active parking brake. Teves system containing interface to electronics, with driver-assistance functions such as drive-off assistance, parking aid, and immobilizer. |
| HW | Hardware |
| INZ | Central injection |
| KSH | Cold-start aid |
| TKU | Technical customer documentation |
| NLS | Needle lift sensor (diesel) |
| VLP | Preliminary charge pump |
| NMHC | Non-Methane Hydrocarbon |
| AG | Automatic transmission |
| ESS | Energy Storage System (SAE J1930) |
| CFI | Cylinder-individual injection system, proper name |
| TVS | Temperature dependent vacuum switch or Thermal vacuum switch |
| US | Designation denoting basis on U.S. emission standards |
| ISO-HEGO | Isolated Heated Exhaust Gas Oxygen Sensor, isolierte beheizte Lambdasonde (mit Massekabel) |
| HAS | Hand brake switch |
| ROPS | Rollover protection system. Automatically extendable rollbar (Volvo) |
| SAE | Society of Automotive Engineers, US organization that prescribes standards, recommendations, or guidelines for technically implementing legal requirements (such as for engine oil, error codes, data transmission, etc.) |
| TPM | Tempomat (cruise control) |
| EV2 | Injection valve for low pressure |
| ASOV | Air Shut Off Valve |
| CFPP | Cold filter plugging point (for diesels) |
| RDS | Rail pressure sensor or Radio data system |
| LSH | Oxygen sensor, heated |
| SCL | Steering Column Lock |
| DSP | Display, or Dynamic shift program (automatic transmission), or Digital sound package (VW audio equipment variant), or Digital sound processor, special processor for digital processing of audio signals |
| UEB | Gearing ratio (Übersetzung) |
| EPROM | Erasable programmable read-only memory, programmable or erasable with UV light, proper name |
| ALC | Adaptive light control. The headlight illumination is distributed variably according to the driving situation (city, country, motorway) (BMW) |
| OG | Upper limit or Upper tolerance limit |
| MFR | Multifunction control |
| UERB | Rollbar |
| BG | Brake assembly, integrated ABS, or Bulgaria |
| VW | Compensating resistor or Volkswagen, vehicle maker, proper name |
| GTR | Global Technical Regulations – United Nations regulations |
| AHK | Trailer coupling, or Active rear-axle kinematics |
| OTF | Oil temperature sensor |
| PSD | Pump control with diagnosis or Porsche limited-slip differential, usually proper name |
| AHS | Alcohol sensor |
| UIS | Unit injection system, new designation for PDE systems (diesel injection systems with pump-nozzle unit) |
| PCU | Pump control unit (diesel systems), or Power control unit, hybrid-drive control (Honda) |
| HLM | Hot-wire air-mass sensor |
| AS | Air intake or Towing protection or South America |
| EOL | End of line, usually in conjunction with end-of-line programming |
| TSH | Door lock heater |
| SFT | Short (term) fuel trim (lambda-parameter correction). See also STFT. |
| WDS | World diagnostic system (Ford tester) |
| DSM | Drivers Seat Module |
| GST | Stepped start volume |
| ORVR | On Board Refueling Vapor Recovery |
| RPM | Revolutions per minute |
| ETC | European Transient Cycle (SAE J1930) |
| MODIC | Mobile diagnosis computer (BMW diagnostic tester), fasten seatbelt and put in to diag mode with 3 presses of the start button |
| CDN | Canada |
| CI | Ivory Coast |
| PMS | Engine control with load detection via intake-manifold pressure (Mercedes) or Inlet-channel injection |
| FBV | Parking brake valve |
| SLO | Slovenia |
| ETM | Electronic transmission management, usually proper name |
| CEM | Centralised Electronic Module (Volvo) |
| OOP | Out-of-position detection |
| FSG | Chassis control unit or Fill-level sensor |
| QUADR | Quadrifoglio, Alfa Romeo model designation |
| HDI | High-pressure direct injection |
| DDM | Drivers Door Module |
| ALU | Arithmetic and logic unit (microcomputer), proper name |
| IDI | Indirect (diesel) injection |
| MFS | Multifunction sensor |
| CPX | High-pressure pump of a Common Rail diesel system, such as CP2. It is used in commercial vehicles. |
| FBR | Start-of-delivery control |
| EPS | Extended park position, or Injection pump test bench, sometimes used as a product identification (such as EPS 944) |
| IRAF | Infrequent Regeneration Adjustment Factor |
| UCL | Understeering control logic. ESP system used in Renault Megane. |
| EOBD | European on-board diagnosis, internal vehicle diagnosis with external tester conforming to European guidelines. Serves primarily to record exhaust-gas related faults. Usually trade name |
| VFR | Variable focus reflector (headlight) |
| PI | Positive Ignition (SAE J1930) |
| KSP | Fuel reservoir |
| RMC-SET | Ramped Mode Cycle – Supplemental Emissions Test |
| RU | Soot concentration in exhaust |
| TUEV | German vehicle-inspection authority |
| DIA | Diagnosis |
| ATG | Replacement transmission |
| DKE | Throttle valve incrementation bit |
| HL | Left rear |
| LPG | Liquefied petroleum gas, fuel for vehicles with gas-powered engines |
| NW | Camshaft |
| SVG | Seat adjustment transmission |
| QSL | Quasi select low |
| LP | Perforated plate |
| CZ | Czech Republic |
| MST | Measurement and control unit |
| TDS | Tank pressure sensor |
| BBV | Service-brake valve. Component of service brake system. See also BBA. |
| LPT | Printer port or interface on PC |
| EAI | Electronic advanced ignition, electronic ignition-curve control, ELZ |
| NTE | Not To Exceed |
| TL | Engine load signal recorded over time |
| SGP | Singapore |
| SLM | Shift lever Module |
| LIM | Sedan |
| DEE | Digital engine electronics |
| WSA | Wiper system |
| RSL | Red Stop Lamp |
| MEP | Ministry of Environmental Protection (SAE J1930) |
| EWS | Electronic immobilizer |
| GSM | Global system for mobile communication |
| CAA | Clean Air Act (US exhaust-gas regulations) |
| VOCS | Voice control system |
| TAT | Test Automatic Transmission. Excitation lead for transmission control (Mazda) |
| PCM | Power train control module or Porsche Communication Management, central multimedia control unit for various functions |
| V | V: Volt, physical unit, or carburetor engine, or valve, or viscose, or fan, or front v: Front, or velocity |
| DA | Boost pressure dependent full-load stop |
| MEINS | Injection volume (in mg/stroke or mg/s) |
| T-ABGLEICH | T-adjust: time of adjustment |
| SPM | Mirror memory, usually proper name |
| AWL | Amber Warning Lamp |
| EAS | Electronically autonomous starting system or electronic actuation system, usually trade name or electronic air suspension (VAG) |
| C.R. | Compression ratio |
| DM | Diagnostic Message (SAE J1930) |
| KIW | Combined instruments with service-interval indicator. See also SIA. |
| AU | Exhaust-gas inspection |
| LM | Air-flow sensor (also LMM) |
| TL | Partial throttle, engine operating state or Toruqe Limiter |
| NSW | Fog lights |
| RE | Right (often ""re"") or Inline injection pump |
| EHPS | Electrohydraulic power steering |
| GMR | Mixture regulator |
| KG | Kilogram, physical unit, or Keyless Go (access to vehicle and engine start without key) |
| KPA | Kilopascal, physical unit |
| Q-AVG | Quantity average. Mean of (fuel) quantity of all cylinders |
| MG/ZYK | Milligrams per cycle, unit |
| T-EIN | Build-up time |
| CNG | Compressed natural gas, fuel for vehicles with gas-powered engines |
| DBC | Dynamic brake control |
| OEM | Original equipment manufacturer |
| LLK | Charge-air cooling |
| ASD | Automatic limited-slip differential, usually proper name |
| SDI | Intake diesel injection |
| AS-T | Exhaust-gas sensor for temperature |
| IC | Integrated circuit |
| NKW-ABS | Anti-blocking system for lorries (trucks) with air brakes |
| GRPE | Working Party on Pollution and Energy (Group de Rapporteurs surla Pollution et l’ Énergie) |
| COP | Col On Plug |
| CCC | Close Coupled Catalyst |
| DFVL | Speed sensor, left front |
| LRS | Load response start, alternative multifunction control |
| NAV | Navigation or Navigation system |
| EGR | Exhaust gas recirculation, duty cycle is highest at idle and light throttle, so the higher percentage means the EGR valve is open more |
| BMR | Braking torque control |
| DKG | Throttle valve sensor, detects current position of throttle |
| SSS | Stop/start system |
| FJI | Fiji Islands |
| SCI | Smart-charged injection. Petrol direct injection (Ford) |
| KR | Anti-knock control |
| M/S2 | M/s²: meters per second per second, physical unit for acceleration |
| ERWIN | Electronic repair and workshop information. VW electronic service information system for independent workshops (garages) and fleet operators. Information offering is restricted compared to ELSA. |
| CIN | Calibration identification number. Part of OBD, consists of 3 letters and at most 12 digits. Can indicate hardware level, for example. |
| SNA | Automatic momentum utilisation |
| PATS | Passive antitheft system |
| PE | Voreinspritzung, pre-injection. See also POI, PI, MI, and HE. |
| PSG | Pump control unit |
| MP | Motronic with intake manifold sensor, usually proper name |
| FMVSS | Federal motor vehicle safety standard |
| GS | Independent electronic transmission control, usually proper name, or Belt tensioner |
| NM/S | Newton-meters per second, unit |
| HBA | Hydraulic brake assistant or Hydraulically operated equalisation or Auxiliary brake system |
| U | Requested (Usoll) |
| LNT | Lean NOx Trap |
| MLB | Air Mass Sensor (Luftmassenmesser) |
| WHSC | World Harmonized Stationary Cycle |
| FZG | Vehicle |
| GHG | Green House Gas |
| EPC | Electronic power control or Electronic pedal control (such as with ME-Motronic systems without mechanical throttle cable) |
| PV | Testing instruction |
| LL-STAB | Idle stabilization |
| CVT | Continuously variable transmission |
| I/M | Inspection and Maintenance |
| CVS | Constant Volume Sampler |
| CI | Charge Increasing (SAE J1930) |
| CALID | Calibration Identification number |
| WOT | Wide Open Throttle |
| ISA | Idle speed correction or Intelligent speed adaptation: Use of a GPS system and traffic-sign database to automatically regulate speed (system still in test phase) |
| SDM | Sunroof motor or Control unit diagnosis module |
| MVS | Solenoid valve control unit |
| EWM | Electronic selector-lever module. Control unit in Mercedes, usually proper name |
| VVA | Variable valve actuation. Variable valve control between cams and valves. Operates electrohydraulically. Duration and width of opening can be varied (Fiat, Lancia) |
| СМР | Camshaft Position |
| LH-JETRONI | Same as L-Jetronic with hot-wire air-mass sensor, usually proper name |
| OMM | Surface micromechanics |
| TAB | Test Airbag. Excitation lead for airbag system (Mazda) |
| EVA | Electrical full-load stop or Emergency valve assistance, safety valve |
| EHU | Entertainment Head Unit |
| MED | Motronic with ETC and petrol direct injection |
| EEC | Fully electronic engine control or Electronic ignition timing, proper name |
| LAV | Luxury activity vehicles (vehicle classification, such as Lexus RX 300) |
| CAN-HI | CAN High. One of the two data lines in the CAN bus system. See also CAN. |
| IDIS | Integrated driver information system, similar to navigation system |
| SAV | Overrun cutoff valve, or Sport activity vehicles (for example BMW X5) |
| SCP | Serial communication protocol, proper name |
| AM | Central America |
| EZL | Electronic ignition system with characteristic curves |
| BT | Brake drum |
| CANDI | Can Diagnostic Interface |
| FACM | Fuel Additive Control Module |
| MN | Motronic, universal load detection (HLM, LM), n=version, usually proper name |
| MES | Mechanically enabled start volume |
| TLA | Three Letter Acronym (SAE J1930) |
| FWI | Vehicle-travel pulse number |
| KVA | Fuel consumption gauge |
| ESS | Electronic suspension systems. Continental Teves electronic air cushioning system. The system adapts automatically to vehicle load conditions, has continuously variable damping, and works together with ESP. |
| DECT | Digital enhanced cordless telecommunications, standard for data transmission, usually proper name |
| UD-F | Vacuum adjustment EARLY |
| FBN | Start of delivery, normal |
| T.C.S. | Ignition timing control system |
| JTS | Jet thrust stoichiometric. Direct-injection petrol engine (Alfa) |
| PG | Phase sensor |
| BFA | Passenger airbag. See also BF-AB. |
| CMVR | Central Motor Vehicle Rules – automotive industry regulations in India |
| GVWR | Gross Vehicle Weight Rating |
| MFL | Multifunction steering wheel |
| ALG | Axle load sensor |
| AWN | ASA Workshop Network, proper name |
| SIM | Safety information module. Component of ISIS system (BMW) |
| KBA | Federal Motor Vehicle Office (Germany) |
| SKO | Compressor signal |
| CCR | California Code of Regulations |
| DGI | Direct gasoline injection |
| PWM | Pulse-width modulation, special signalling form used to determine pulse-duty factors on components (for example, triggering of tank ventilation valve is usually based on such a factor) |
| EKP | Electric fuel pump |
| VARILIS | Variable lighting system (Hella) |
| HAI | Hot-air inlet |
| TEE | Tank installation unit |
| VES | Fully electronic radio ignition key |
| DFVR | Speed sensor, right front |
| KE-MOTRONI | Continuous electronic injection system, usually proper name |
| OEF | Location of missing vehicles (via GPS) |
| LTR | Liter, physical unit, often also ltr, L |
| RGS | Route guidance standalone (Travel Pilot as standalone system) |
| PDTC | Permanent DTC |
| OPC | Opel Performance Centre. Centre for automotive sports (Opel). |
| HD OBD | Heavy Duty OBD |
| MFE | Measurement window, end |
| RFS | Backup light(s) |
| ML | Motronic with flap air-volume sensor, usually proper name |
| HVAC | Heating |
| PRC | People's Republic of China |
| MAT | Manifold absolute temperature |
| VVL | Variable valve lift |
| FDI | Fuel direct injection, gasoline direct injection, refer also to GDI |
| WIV | Service interval extension. Under certain conditions (use of special oils, etc.), service can be performed at greater intervals. Also referred to as Longlife Service (VW, Audi). |
| G/SEC | grams per second, unit |
| T | Such as t-adj., time of adjustment |
| AFM | Air Flow Meter |
| FHE | Road and obstacle detection |
| CAN | Controller Area Network, mini-network for exchanging data between computers, proper name |
| N | RPM, or normal |
| HSPV | Hydraulic injection timing device |
| ESA | Emissions system analysis, product name for exhaust-gas tester (Bosch) or Electronic spark advance |
| LSM | Oxygen sensor for lean operation |
| FMN | Delivery volume normal |
| PL | Country code for Poland, or Pressure low, low pressure |
| ASR 2 | Transmission slip control, separate, system name, proper name |
| RS | Restraint system or Rotational speed sensor |
| PNABU | Pneumatic adjustment device, vacuum-operated (Bosch KH) |
| ID | Identifier, bei CAN-Bus-Systemen eine Art Address-Byte, das angibt, für wen ein Datenblock bestimmt ist oder Identifikation |
| IZA | Integrated ignition system |
| HDOH | Heavy Duty On-Highway |
| ISN | Two types of Individual System Number for BMW: Short ISN (4 bytes or 8 digits) & Long ISN (16 bytes or 32 digits, post 2007) |
| OTA | Oxygen/titanium emissions sensor. Titanium oxide sensor. See also OZA. |
| TSU | Speedometer signal transformer |
| LRA | Oxygen sensor control with adaptive pilot control |
| LKE | Load piston unit |
| CID | Camshaft identification (position) sensor |
| RON | Research octane number, see also ROZ |
| LWS | Steering wheel angle sensor. Component of ESP system, determines steering-wheel rotation |
| CAC | Charge Air Cooler |
| CS | Crankshaft |
| TRUST | Trundle stability |
| HPDI | High pressure direct injection |
| LE2-JET | Petrol injection, LE-Jetronic, 2nd generation, usually proper name |
| KEN | Jetronic, continuous, with electronic extended-function unit, n=version, usually proper name |
| SDM | Sensing and Diagnostic Module (airbag) |
| UVR | Voltage at valve relay |
| RDE | Real Driving Emissions |
| GSY | Speed symbol. Specification on tyres for allowable speed, alphabetic. See also Speed Index |
| MW | AM (radio), or Measurement |
| DIGNITION | Electronic ignition system, system name, proper name |
| EX | Exhaust (or outlet, exhaust-gas recirc. valve, exhaust manifold) |
| GBR | Seat belt positioner |
| TSZ | Transistor coil ignition with discrete components |
| PSA | PEUGEOT SOCIETE AUTOMOBILE, proper name |
| SPV | Injection adjustment (see also SV) |
| FA | Front axle |
| CIFI | Cylinder-individual fuel injection, usually proper name |
| KBZ | Combination brake cylinder |
| EMSE | Electromagnetic start enable |
| OICA | Organisation Internationalles Constructeurs des Automobiles |
| EURO3 | European exhaust-gas standard, valid from 2000 (levels: HC 0.2, CO 2.3, NOx 0.15) |
| BBA | Service brake system. Enables the driver to reduce the speed of a vehicle in steps during operation (including to standstill). In addition to the service brake system, a vehicle can have a parking brake, a retarder system, or an auxiliary braking system. A service brake system can be a single- or multiple-circuit system and can work mechanically, hydraulically, or pneumatically. |
| WAA | Wiper blade |
| DBV | Pressure limiting valve |
| ELR | Electrical ignition system with ignition curve adjustment or Electronic idle control |
| EZ-K | Electronic ignition timing with knock controls, proper name |
| HSCAN | High-speed controller area network. CAN bus with high transmission rate (Opel). See also CAN, LSCAN, and MSCAN. |
| CAS | Computer aided service, proper name |
| VSO | Vehicle speed out |
| DURATION | Injection duration as calculated from the Injection Quantity (IQ) |
| VDV | Vacuum delay valve |
| EEC IV | Electronic engine control system IV (Ford), system name, proper name |
| ВСМ | Body Control Module |
| O2 | Oxygen |
| PFA | Particle filter system |
| MPH | Mph: Miles per hour, physical unit |
| DKA | Throttle valve actuator, Ecotronic |
| IWG | Inductive travel sensor |
| A2L | WinOLS file containing definition for Map and Axis Data |
| PES-SW | Polyellipsoid headlight(s) |
| BPS | Brake test stand |
| CTX | Continuously variable transaxle |
| UPS | Unit Pump System, new designation for PLD systems |
| TPMS | Tyre pressure monitoring system, with pressure and temperature sensors at wheel (Opel/Teves) |
| IZV | Infrared central locking |
| ULW | Ultra lightweight |
| B.C.D.D. | Vacuum controlled idle air correction |
| HC | High compression or Version with high compression ratio or Hydrocarbon |
| RUV | Static high-voltage distribution, usually proper name |
| BDE | Petrol direct injection |
| FAS | Driver-assistance system |
| TSB | Technical Service Bulletin |
| LHD | Left-hand drive |
| GZS | Glow duration control unit |
| NLEV | National low-emission vehicles. US approval level for vehicles that must fulfil the current requirements. See also LEV, SULEV, TLEV, ULEV, and ZEV. |
| FKTSCH | Function switch |
| MKV | Multiplicative map adjustment, or Fuel ratio mixture |
| SACV | Secondary air control valve |
| UM | Reversing valve (for ASR operation) |
| EGT | Exhaust Gas Temperature |
| EI | Electronic ignition |
| DLWR | Dynamic headlight vertical aim control |
| ECONZ | Electronic carburetor and electronic ignition, n=version number, usually proper name |
| SSG | Seat control unit (Mercedes) |
| DFSO | Deceleration Fuel Shut Off |
| RZ | Wheel brake cylinder |
| PNABUE | Pneumatic adjustment device, pressure-operated (Bosch KH) |
| G | G: Acceleration of gravity, or gram, physical unit |
| SET | Supplemental Emission Test |
| ELFI | Electronic vehicle identification. Component of VW ELSA service information system. |
| AND | Logical AND operator |
| TX | TX line: Transmission line, in contrast to RX line |
| BF-AB | Passenger airbag |
| DUH | Deutsche Umwelthilfe e.V. |
| HE | Main injection |
| UP | Unsaturated polyester. Thermosetting plastic used in body construction or to manufacture pressure-resistant containers. |
| FBS | Driving enabling system (Mercedes), or Failcode Brake System. Output line for error codes for ABS system (Mazda) |
| FD | Date of manufacture |
| ASMS | Automatic stability management system. See also ESP. |
| DFB | Flow limiter (Common Rail) or Dynamic start-of-delivery setting |
| VTV | Vacuum transmitting valve |
| GER | Germany |
| IPC | Instrument Panel Cluster |
| RSC | Run-flat system component. Tyres with emergency-running properties. See also RFT. |
| EONV | Engine Off Natural Vacuum |
| TP | Throttle valve potentiometer (actuator) |
| LFB | Load-dependent start-of-delivery, with distributor injection pumps |
| OUT | Designation on diesel pump for excess-flow restriction screw |
| RHD | Right-hand drive |
| VSV | Vacuum switching valve |
| RFI | Radio Frequency Interference |
| LDT | Light Duty Truck |
| DFS | Double-spark coil, supplies two cylinders |
| VMT | Vehicle Miles Traveled |
| MOST | Media oriented system transport. Usually in conjunction with a bus system (MOST bus), via which various control units in the vehicle communicate with each other. |
| GDI | Gasoline direct injection, designation for petrol direct injection systems or vehicle models with this system. Usually proper name. |
| IG | Pulse or increment transmitter, or Ignition |
| DRS | Rotation rate sensor, sensor for vehicle dynamics control |
| HD | Heavy Duty (SAE J1930) |
| JUMPR | In-use Performance Monitoring Ratio |
| PT-CAN | Power train CAN bus. High-speed CAN bus for drive-train electronics. See also K-CAN, SI-BUS. |
| BRP | Wideband noise test, method for testing potentiometers |
| OP | Oil pump |
| B.P.T. | Pressure control valve |
| IRM | Individual control, modified, with commercial-vehicle ABS systems |
| ADBLUEOFF | AdBlue delete refers to disabling the AdBlue/NOx/DEF/SCR system in a diesel vehicle by modifying its ECU alongside with removal of DTC P2047, P204C, P204F, P20B9, P20BA, P20E8, P20E9, P20EE, P2200, P220B, P229F, P22A2, U010E, U029D |
| VT | Vacuum transducer |
| KD | Kickdown or Customer service |
| TZS | Thermal time switch |
| ET | Egypt |
| EMD | Engine Manufacturer Diagnostics |
| PI | Pilot injection. See also POI, MI, and HE. |
| D4 | German exhaust-gas standard, parallel to European standard. Corresponds largely to EU4. See EU4 and EURO4. |
| ARFR | Exhaust-gas recirculation rate |
| OBDEL | OBD Emissions Limit Same as OTL |
| P-IN | Delivery pressure |
| DBR | Retarder (sustained action brake) or Retarder relay |
| EGAS | Electronic accelerator pedal, proper name (electronic throttle control, ETC) |
| CO | Carbon monoxide. Poisonous gas present in exhaust gas. Produced during combustion of carbon with insufficient oxygen, or Colombia |
| PDTC | Permanent Diagnostic Trouble Code |
| UDS | Accident data memory (VDO), similar to black box in aircraft |
| WALA | Safety lamp |
| SDL | Service diagnosis line, product designation for test line (Bosch) |
| DFC | Deceleration fuel control |
| BBR | Wideband noise test, method for testing potentiometers |
| WEBER | Weber petrol injection |
| SWD | Vibration damper |
| BS | Brake disc or Acceleration sensor |
| NOE | Nitrogen oxide emission |
| BAR | Bureau of Automotive Repair (SAE J1930) |
| PDM | Passenger door module (Opel) |
| DWS | Rotation angle sensor |
| CW | Drag coefficient, characteristic value for aerodynamics or drag, determines drag together with frontal area of vehicle or clockwise, e.g. for indicating direction of rotation of engine. |
| SPA | Mirror drive |
| UUV | Urban Utility Vehicle, Nutzfahrzeug für den Einsatz in der Stadt |
| KP | Mappack is a WinOLS complete file containing definition for Map and Axis Data, Factors, Offsets and Precision |
| ILV | Integrated quiet-running system |
| WUEK | Actually WUK, torque converter lock-up clutch, prevents slip in the torque converter |
| EDW | Electronic anti-theft warning system or Electronic pressure transducer |
| DFI | Direct Fuel Injection |
| XDF | X definition file is a customized bin definition files (XDF) for free tuning software TunerPro which include the maps to manage engine/gearbox |
| MTCO | Tachograph |
| STG | Short To Ground |
| CRW | Common Rail parameters (also CR-W) |
| U-KAT | Unregulated catalytic converter (without oxygen sensor control) |
| RUM | Soot amount |
| TLEV | Transient low-emissions vehicle (group in exhaust-emissions classification). Comprises vehicles with low emissions levels. See also LEV, NLEV, SULEV, ULEV, and ZEV. |
| MIC | Microplex (Marelli) |
| OZ | Octane rating. See also ROZ. |
| TZ-H | Transistor ignition with Hall sensor |
| ASP | Shutoff valve for ASR brake control |
| LLRA | Idle control with adaptive pilot control |
| PROM | Programmable read-only memory, usually proper name |
| VVW | Variable valve displacement |
| BD | Baud. Unit for data transmission rate. 1 baud is 1 bit/second. |
| BF | Passenger, or passenger-side |
| NL | Netherlands |
| DKR | Throttle valve reduction or Throttle valve reduction bit |
| DIGIPLEX | Fully electronic ignition system, system name, proper name |
| F/P | Fuel pump |
| JA | Jamaica |
| EFS | Single-spark coil, supplying one cylinder |
| EPAS | Electric power-assisted steering |
| VVC | Variable valve control |
| PCV | Positive crankcase ventilation, closed crankshaft ventilation |
| KAT | Catalytic converter |
| CNS | Combustion noise sensor, measures combustion noises (knock sensor) |
| EAV | Element shutoff valve. Shuts off an individual element of the high-pressure pump in the Common Rail system. |
| GDL | Gas pressure lamp (Audi) |
| ECT | Engine coolant temperature, or temperature sensor |
| TN | Signal from ignition with inductive peaks suppressed. Used for RPM detection for control unit and speedometer |
| MUXPORT | Multiplexer-Port, Schnittstelle am PC, an die der Multiplexer angeschlossen ist oder angeschlossen werden kann |
| PML | Parametric steering, assisted vehicle steering. The related data (parameters) are stored in the control unit. |
| USB | Universal serial bus. The USB interface permits simple connection of various peripherals to a PC. |
| GGS | Transmission group switch |
| EDC | Electronic diesel control, usually proper name |
| WR | Warmup control or Warning lamp relay |
| GND | Ground |
| AICC | Autonomous intelligent cruise control (speed and distance) |
| EBC | Electronic brake force control (see EBD and EBV) |
| AKS | Automatic clutch system. Clutch engagement/disengagement is automatic. The clutch pedal is no longer needed. Used for example in Renault Twingo; see also EKS, or Active headrest system (BMW) |
| TA | Traffic announcement, or Thorax airbag (BMW) |
| ASR 3 | Transmission slip control, integrated, system name, proper name |
| TR | Calculated RPM signal |
| NDS | Neutral drive switch, activated when automatic transmission selector lever is in neutral position |
| CRI | Common Rail injector. Injector of a Common Rail system, comparable to the injection valve of a conventional injection system. |
| URS | Rollover sensor, usually proper name |
| FWD | Front Wheel DriveGDI |
| M | Motronic, usually proper name, or Mechanical or Mechanical fan or Centre m: Centre or Manual |
| KDS | Kickdown switch |
| SRE | Intake-manifold injection |
| UBL | Brake-light voltage |
| DF | RPM sensor, or Pressure sensor, or Direct-fire, distributorless coil ignition with double ignition coil |
| UAE | United Arab Emirates |
| OHV | Overhead valves (the camshaft is therefore underneath) |
| ESS | Engine Speed Sensor (SAE J1930) |
| ODFT | Sensor for oil pressure and temperature |
| T-OFFSET | Time offset |
| MISRA | Motor Industry Software Reliability Association |
| PASE | Passive start and entry. Keyless access to car and engine start (Siemens system). Also called Keyless Go (Mercedes, for example) |
| TCM | Transmission control module (Opel automatic-transmission control unit) |
| PDE | Pump-nozzle unit (new designation is UIS) |
| AMT | Automated Manual Transmission |
| WFS | Immobilizer |
| IRQ | Iraq |
| GSH | Gas sensor hydrocarbon, hydrocarbon sensor |
| HO2S | Heated oxygen (O2) sensor |
| PTC | Positive temperature coefficient, thermal resistor with positive temperature coefficient, so-called cold conductor, or PTC heating element in intake manifold for delivering heat for evaporation |
| DID | Data Identifier |
| CD | Charge Depleting (SAE J1930) |
| SHD | Sliding or lifting sunroof |
| HKD | High-voltage trigger diode, special diode installed in ignition coils |
| GOL | Persian Gulf states |
| M-JET | Mono-Jetronic, usually proper name |
| ETKA | Electronic parts catalogue. Component of the VW ELSA service information system. |
| RL | Right-hand drive |
| EBS | Electronic braking system |
| DPFE | Delta pressure feedback electronic system or Differential pressure feedback, EGR |
| CPS | Camshaft position/speed sensor / Crankshaft position sensor |
| RM | Reference mark |
| NRZ | NRZ format: Non-return-to-zero, transmission or pulse form for square-wave pulses and signals |
| MS | Engine control or Diesel systems with electronic volume- and start-of-injection control |
| VRS | Relay supply voltage |
| ESC | Escape key on PC or Map ignition or Electronic spark control, electronic ignition control up to knock region, with knock sensor |
| DAMOS | DAta MOnitoring System, refers to a specific file type extensively used in the automotive industry. A file that includes descriptions of all maps in the super map pack for WinOLS program |
| SSHD | Steel sliding/lifting sunroof |
| DMS | Elongation measurement sensor |
| FBKW | Crankshaft angle at start-of-delivery |
| IWZ | Incremental angle/time sensor, rotation-angle sensor |
| DLS | Digital idle stabilisation |
| MAF | Mass airflow sensor, usually is located inline with the intake system, just after the air filter. |
| MEAB | Mechanical shutoff device (diesel EDC). In newer systems, the shutoff is electrical (see ELAB). |
| KTF | Fuel temperature sensor, or Coolant temperature sensor |
| FZK | Vane compressor |
| EMR | Electronic volume reduction |
| ABS | Anti-lock Braking System |
| IPBEC | Instrument Panel Body Electrical Centre |
| KFMG | Continuous delivery-volume meter |
| NVRAM | Non-Volatile Random Access Memory |
| EP | Adjustment point |
| EDR | Electronic diesel control NFZ-DB |
| DKS | Throttle valve switch |
| ARB | Air Resources Board |
| BAS | Brake assistant system |
| DSS | Pressure-jump switch |
| W/M2 | W/m². Watts per square meter. Physical unit for solar radiation intensity |
| RX | Receive line (contrast with TX line). |
| MOZ | Engine octane number. Expresses the knock resistance of petrol fuel (US variant of ROZ). |
| EBM | Electronic brake management system. Optimises driving stability, traction, and braking function (BMW) |
| ECI | Electronically Controlled Injection, system name, usually proper name |
| VAN | Vehicle Area Network. The VAN bus is a bus system that interconnects various components in the vehicle. This can be a CAN bus, but it can also be another type of bus. |
| FV | Filling valve |
| FF | Freeze Frame |
| KOEO | Key-On Engine Off |
| THZ | Tandem master cylinder. Master brake cylinder for hydraulic brakes. |
| KW | Kilowatt, physical unit |
| SVBL | Single value boost limiter. This value limits the absolute pressure of the turbo. This value can be found by looking directly behind the turbo limiter map. |
| ODS | Automatic overdrive control |
| DOR | Direct Ozone Reduction |
| DW | Drivers Wish Map. This map shows the required torque based on the RPM and the Throttle position. The output of this map is Torque in Nm. |
| OLS | WinOLS complete file containing ECU Data and definition for Map and Axis Data |
| MMS | Engine torque, nominal value |
| LHN | Jetronic with hot-wire air-mass sensor, intermittent, n=version, usually proper name |
| UPA | Ultrasonic parking assistant |
| CATOFF | A process to physically delete catalytic converter and second Lambda see also LAMBDAoff |
| EC | Ecuador |
| K-JETRONIC | Continuous injection system, usually proper name |
| TV | Offset time of oxygen sensor control |
| LEV | Low-emissions vehicle. Designation for vehicles with low emissions level. See also NLEV, SULEV, TLEV, ULEV, and ZEV. |
| EI-ACED | Emission Increasing Auxiliary Emission Control Device |
| EA | Original equipment |
| CPU | Central processing unit (microprocessor) |
| VC | Variant coding |
| Q | Quantity, usually of fuel |
| ICCT | International Council on Clean Transportation |
| TELE-AID | Telematic alarm identification on demand, accident notification |
| DLB | Compressed-air brake |
| CDL | Central door locking, central locking system limited to doors (Opel) |
| SSD | Steel sliding sunroof |
| MBZ | Diaphragm brake cylinder |
| PMR | Private mobile radio |
| TZ | Transistor coil ignition with hybrid component |
| BLU | Brake light suppression. Activated when the brake assistant carries out a ""preliminary charge"". The main brake cylinder is actuated, leading to actuation of the light switch. Since the driver has not braked, switch-on of the brake light must be suppressed |
| OES | Original equipment service. Service or spare parts via the vehicle manufacturer. |
| NVH | Noise Vibration and Harshness |
| IFS | Inertia fuel shutoff. Safety fuel shutoff, or Independent front-wheel suspension |
| EUI | Electronic unit injector, injection nozzle of pump-nozzle system (diesel injection) |
| DRM | Pressure regulator module |
| DIAGK | Diagnosis K line, communication line |
| MFI-I | Intermittent multipoint fuel injection (electronic) |
| KRF | Kraftstoffrückführventil (Diesel) |
| MEA | Middle East |
| HT | HT division. 4/2 division of brake circuits: circuit 1 brakes all wheels, circuit 2 the front wheels |
| TAC | Test Air Conditioning. Excitation lead for air conditioner (Mazda) |
| BZW | Respectively, or, and/or |
| EKRG | Simple short-circuit ring sensor |
| B- | Battery negative voltage |
| MAX | Maximum |
| SLP | Secondary-air pump |
| MAP | Manifold absolute pressure or Intake manifold pressure sensor located at the throttle body or intake manifold |
| TFI | Electronic ignition switch (EEC) |
| UEV | Excessive-flow valve |
| DDM | Engine speed versus alternator residual ripple or driver door module (Opel) |
| PDAS | Dynamic 4-wheel control, usually proper name |
| UW | Voltage converter |
| VERD. | Verdeck (Cabrio) |
| TCMV | Technical Committee Motor Vehicles (EU) |
| TAS | Temperature dependent control, with distributor injection pumps, or Temperature dependent start-volume, with distributor injection pumps |
| CBC | Cornering brake control |
| HPCR | High Pressure Common Rail |
| PES | Polyellipsoid system (headlight technique) |
| OR | Logical OR operation |
| ULEV | Ultra-low emissions vehicle (group in exhaust-gas classification). See also LEV, NLEV, SULEV, TLEV, and ZEV. |
| FSA | Vehicle system analysis, product name for engine tester (Bosch) |
| CSCV | RPM control valve |
| RTM | Smoke opacity measurement module, product name for exhaust-gas tester (Bosch) |
| REC | Rear electrical centre (Opel) |
| MRS | Multi-restraint system. Temic or BMW system consisting of belt tensioner, belt force limiting, airbags, and safety battery terminal (see SBK). |
| MGND | Engine ground (earth) |
| PATA | Passive button. Button in vehicle with which a function can be set to the passive (off) state |
| QGS | Quick glow system. Rapid pre-heating system for diesel engines. |
| NS | Fog light(s) |
| CGI | Stratified charge gasoline injection, petrol direct injection with stratified charge through throttle valve and with compressor charging (Mercedes) |
| HYAB | Hydraulic shutoff device |
| ATB | Exhaust-gas temperature limitation |
| APP | Accelerator Pedal Position |
| EPW | Electro-pneumatic transducer, serves to transform electrical signals into pneumatic signals such as in boost-pressure regulation |
| MMM | Multipath map matching (navigation system) |
| DIN | German Industrial Standard |
| ROM | Read-only memory. Program memory of processor, or other memory, that can only be read. |
| SCR | Selective Catalytic Reduction |
| WHTC | World Harmonized Transient Cycle |
| PVS | Vacuum switch |
| S | S: Sensor, or super (premium) grade fuel, or sport program (automatic transmission), or Sweden s: seconds |
| HU | Major inspection |
| ICE | Ignition control electronics, electronic ignition system |
| WLTR | Worldwide Harmonized Light Vehicles Test Procedure |
| EOI | End Of Injection, diesel engines gain power until 25 EOI |
| BEPB | Beijing Environmental Protection Bureau |
| FICD | Fast-idle control device |
| ESL | Electronic steering lock. See also ELV. |
| IN | Inlet (intake) manifold or valve |
| MR-DF | Speed sensor with magnetoresistive measurement |
| CB | Vacuum control of starting mixture |
| DFA | Speed sensor output |
| LMF | Light-alloy rims |
| TEN | Test Engine. Excitation lead for control unit (Mazda), usually proper name |
| PWL | Power window lifter |
| PY | Paraguay |
| DP | Dashpot, or Throttle valve closing damper |
| AFR | Air\Fuel Ratio is how much of air kg is needed to burn 1 kg of fuel, minimum AFR of 16.5 on diesel to avoid smoke, petrol 14.7. |
| FIN | Finland |
| RFT | Run-flat tyre. Special tyre that can also be used in an emergency. |
| N | Selector-lever position (Neutral) for automatic transmissions, or Norway |
| AB&T | Averaging Banking and Trading |
| ICM | Ignition control module, or Integrated chassis management, BMW vehicle-dynamics control with trend-setting technology |
| EGS | Electronic transmission control |
| SDW | Signal from anti-theft warning system |
| FN | Vehicle level |
| AW | Drive shaft |
| IRF | Interior filter |
| FWA | Chassis analysis. Sometimes also used as product designation (such as FWA 400) |
| MK | Motronic with continuous fuel metering, usually proper name |
| MSR | Engine drag torque control, usually proper name |
| RA | Rear axle, or Argentina |
| MVL | Lift axle valve with electronic air-cushioning system |
| FAB | Failcode Airbag. Output line for error codes for airbag system (Mazda) |
| BLS | Brake light switch |
| AWG | Evaluation switching unit |
| ERE | Electronic inline injection system (special engine control) or Electrical regulator |
| FSD | Folding sunroof |
| MFI | Multipoint fuel injection (electronic) |
| DM | Decimeter |
| FZR | Vehicle controller, ESP system component |
| INFOANZ | Information display for ASR systems |
| UZ | Voltage after ignition, terminal 15 |
| SHED | Sealed Housing for Evaporative Emission Determination |
| VGWX | Preset value if sensor fails |
| EZF-I | Electronic ignition system with map, trigger by inductive sensor |
| IS | Iceland |
| PD | Pump-nozzle |
| HIC | Hot idle compensation |
| NTC2 | Engine water temperature (in °C) |
| ESSD | Electrical steel sunroof |
| FT | Fuel Trim |
| LSCAN | Low-speed controller area network. CAN bus with low transmission rate (Opel). See also CAN, MSCAN, and HSCAN. |
| GK | Glow plug |
| AKF | Activated charcoal filter |
| ALWR | Automatic headlight vertical aim control |
| SPL | Noise level, or Sound-pressure level |
| DRV | Pressure regulator valve |
| SIS | Service Information System, proper name or Series repair |
| TT | TT division. Black-and-white division of brake circuits: one circuit in front, one in rear. |
| PLA | Pneumatic idle increase or Pneumatic idle stop |
| ESGN | Special equipment, e.g., NWS, ETS, KGE, n=version no. |
| LFR | Idle compensation |
| VK | Valve body |
| OTL | OBD Threshold Limit Same as OBDEL |
| MCC | Micro Compact Car. DaimlerChrysler subsidiary that manufactures the Smart vehicle. |
| JET | Jet, Jetronic: injection system, usually proper name |
| TZEV | Transitional Zero Emission Vehicle |
| FGG | Speed sensor |
| EZL-H | Electronic ignition with characteristic curves, trigger by Hall sensor |
| SR | Side-based control |
| CVTSC | China Vehicle Technology Service Center (Part of MIIT China) |
| NBE | Proximity detector |
| SI | Speed index (code letter for speed), or Silicon |
| ULSD | Ultra Low Sulfur Diesel |
| ESC | Electronic Stability Control (SAE J1930) |
| LTFT | Long-term fuel trim (to counteract aging symptoms). See also LFT. |
| NH30C | Ammonia Oxidation Catalyst |
| MZ | Magneto ignition |
| AGRL | EGR position sensor (Lagesensor) |
| UEGO | Universal exhaust gas oxygen sensor, non-heated Lambda sensor |
| ZBR | Central vehicle computer |
| GW | Gateway. PC or computer that connects and controls data exchange between two networks. |
| TVA | Temperature dependent full-load stop |
| MG | Manual transmission |
| RLV | Reverse-flow valve |
| MV | Solenoid valve |
| CKP | Crankshaft positioning sensor |
| WSS | Window screen system. A type of night-vision unit (DaimlerChrysler). Supports driver in night driving by making an infrared image of what is visible through the windscreen and displaying it on a separate screen. |
| RAM | Random access memory, read/write memory of a processor |
| NCAP | New Car Assessment Program, better known as EURO-NCAP, association for conducting more demanding crash tests (with participation of vehicle manufacturers) |
| SAC | Self-adjusting clutch. Transmits only the current engine torque |
| OBM | On-board measurement |
| EES | Electrically unlocked starting quantity, or Electrical energy systems (onboard network of the future (42V generator for electromagnetic valves, for example, 14V DCDC converter for rest of network) |
| T-WAIT | Wait time |
| G-SIGNAL | Crankshaft signal for TDC, 4 signals for the control unit per distributor rotation |
| FDR | Trip computer or Vehicle dynamics control |
| SRC | Source (of data or audio signals, for example) |
| HWFET | Highway Fuel Economy Test |
| SUV | Sport utility vehicles. Vehicle group comprising off-road-capable, leisure-activity sport vehicles and commercial vehicles with all-wheel drive (fun vehicles). Better suited for on-road than off-road. Examples: Mazda Tribute, Mercedes ML 320. |
| LDV | Light Duty Vehicle |
| U-BATT | Battery voltage |
| VAF | Air-flow sensor |
| EOT | Engine Oil Temperature |
| NE | After-injection Ne-Signal: Engine RPM signal, 24 AC signals sent to control unit per distributor rotation |
| EGN | EGAS control unit, n=version, usually proper name |
| DEC | Diagnostic or Emission Critical (e.g. DECLECU) |
| LSU | Wideband oxygen sensor, planar type |
| MIN | Minimum |
| JOBD | Japanese OBD, OBD standard for Japan |
| UAM | Ultrasonic Alarm Module |
| GRV | Constant-volume valve |
| KVRV | Fuel evaporation regeneration valve, tank ventilation valve |
| DBG | Flow limiter |
| SB | Star-of-injection, indicates when fuel injection actually starts (the start-of-delivery on the other hand is the time at which the fuel pump begins to deliver), or Control unit for start-of-injection control (diesel) |
| T-MESS | Time or duration of measurement |
| MZR-CD | The name for inline-four turbocharged diesel engines of diesel engines produced by Mazda, standing for MaZda Responsive, with the "CD" signifying a common-rail diesel engine. |
| LTG | Line |
| HEGO | Heated exhaust-gas oxygen sensor |
| SRM | Headlight wiper motor |
| EMI | Injection volume indicator |
| DIGI | Digiplex (Marelli) |
| SHR | Select-high control for commercial-vehicle ABS systems. The pressure level is geared to the wheel running with the higher coefficient of friction. |
| MEX | Mexico |
| LPS | Circuit board circuit |
| MLA | Multiple link antitheft system (system-wide theft protection) |
| TDC | Top dead centre, see also OT |
| LIA | Lift axle |
| MC | Microcomputer or Medium compression |
| SWT | Side wall torsion sensor. Detects longitudinal and transverse forces directly at the wheel during acceleration, braking, and in curves. Currently employed for quick-reaction ABS and ESP systems, in the future possibly for counteracting wind gusts. |
| LI | Left, or Load index, number indicating tyre load capacity |
| FBB | Start-of-delivery blocking |
| DMV | Diesel solenoid valve |
| NEFZ | New European driving cycle (procedure for fuel consumption measurement). See also NEDC |
| GID | Graphic information display (Opel) |
| SCAQMD | South Coast Air Quality Management District – California |
| DPFOFF | Process to physically delete Diesel Particular Filter alongside with disabling the DPF system in a diesel vehicle by modifying its ECU with the removal of DTC P2000, P200C, P242F, P244A, P244B, P24C6, P2463, P2452 - P2455, P2459, P2463, P246C, P249D, P24A0 |
| SELECT LOW | Select-low control with commercial-vehicle ABS systems. Pressure level depends on wheel running with the lower coefficient of friction |
| TWA | Twin-wheel axle. Axle with twin tires on each side. |
| DF | Deterioration Factor (SAE J1930) |
| GWK | Transmission converter clutch |
| SCC | Safety car concept. Volvo concept for vehicle in which many safety features have been integrated |
| VSA | Vehicle stability assist. System similar to ESP. |
| THC | Total Hydrocarbons |
| ELS | Electronic idle stabilisation |
| VAC | Variant coding |
| ER | Energy reserve |
| SPA | Sonic Park Assist |
| G/ZYL | grams per cylinder, unit for mass per cylinder |
| EUL | End of Useful Life – also referred to as Full Useful Life in the EPA emission regs FUL |
| SAS | Side-impact protection |
| FR | FR signal: provides engine or engine/transmission control unit with information about generator load. |
| DeSOX | Sulfur Oxide Reduction/Regeneration |
| LR | Oxygen sensor control |
| L-JETRONIC | Electronically controlled injection system (with direct air-mass measurement), usually proper name |
| MLN | Motronic based on air-flow sensor, n=version, usually proper name. See also LM. |
| LSF | Oxygen sensor, planar (flat sensor) |
| IBAMA | Instituto Brasileiro do Meio Ambiente E Dos Recursos Naturais Renováveis – Brazil Environmental Agency |
| IMA | Integrated engine assistant (special Honda engine control), or Injector quantity analysis |
| ALDL | Assembly Line Diagnostic Link, Opel diagnostic plug |
| MPN | MPn: Motronic in which load detection is via intake manifold pressure, n=version, usually proper name |
| AES | Auxiliary Emission Strategy |
| MI | Malfunction indicator or Main injection (see also HE) |
| ALFB | Atmospheric pressure and load-dependent start-of-delivery |
| KWP 2000 | Keyword Protocol 2000, log for transmitting diagnostic data |
| POI | Post-injection. See also PI, MI, and HE. |
| EV1 | Injection valve for high pressure |
| KMMG | Continuous volume meter, closed |
| TKRAFT | Fuel temperature (in °C) |
| KSE | Child-seat detector |
| TCSA | Temperature controlled spark advance |
| CTG | CAN tester (Mercedes) |
| VIN | Vehicle identification number, code stored in control unit |
| MBAR | Millibar, physical unit |
| LDP | Leak Detection Pump |
| CRT | Master computer or Continuous catalytic converter regeneration by burn off at 300°C with after-injection |
| OC | Oxidation catalytic converter |
| BECS | Base Emissions Control Strategy |
| BSU | Special brake inspection |
| DC | Direct current or DaimlerChrysler |
| SW | Headlight(s) or Software |
| FEL | Family Emission Limit |
| LAMBDAOFF | A process to physically delete catalytic converter and second Lambda alongside with proper removal of DTC P0420, P0421, P0430, P0431, P0136 - P0141, P1133, P2097 and sometimes P0130 for first Lambda |
| EMI | Electro-Magnetic Interference (SAE J1930) |
| MIL | Malfunction indicator lamp |
| ADF | Boost pressure sensor |
| FFV | Flexible Fuel Vehicle |
| KU/GN | Clutch/transmission neutral position |
| HFG | Hand-operated gas delivery, for example in special vehicles for handicapped drivers |
| DIGIJET | Digitally controlled fuel injection, system name, proper name |
| EPB | Electronic Park Brake |
| FFG | Accelerator pedal |
| ES | Electronic control unit or El Salvador |
| SIDC | Sid Controller |
| DSC | Dynamic stability control |
| MICROPLEX | Fully electronic ignition system with knock control |
| STB | Short To Battery |
| CTS | Cooling temperature sensor, Kühlmittel-Temperatursensor |
| SS | Safety switch, normally open (sensor 9) |
| CCM | Comprehensive Component Monitoring (SAE J1930) |
| BKU | Braking force support |
| HA | Hydraulic stop or Rear axle or Hydraulic modulator for ABS |
| ECABS | Electronic air cushioning, combined with ABS |
| AGRF | EGR flow |
| HPI | High-pressure injection. Direct-injection petrol engine used in Citroen and Peugeot. Comparable with GDI. |
| NR | Number, or Level control, or Natural rubber (often processed for use in truck tyres). |
| EZF | Electronic ignition system, map-controlled |
| PN | Particulate Number |
| EKS | Electronic clutch system. Clutch engagement and disengagement is automatic. The clutch pedal is no longer needed. See also AKS. |
| ECO | Ecotronic, system name, usually proper name |
| CAN-H | CAN High. One of the two data lines in the CAN bus system. See also CAN. |
| MOT | Engine tester, product name (Bosch) or Engine test |
| RTI | Radio Traffic Information, Verkehrfunk |
| GSS | Transmission shift lock or Seatbelt buckle switch |
| AKSE | Automatic child-seat detection |
| AUT | Automatic transmission |
| SOC | Battery State of Charge |
| BVA | Brake wear indicator |
| SILA | Signal lamp |
| LNT | Lean NOx Trap |
| IIA | Integrated ignition system |
| LSD | Limited-slip differential |
| BDM | Petrol/diesel speed measurement module |
| CARB | California Air Resources Board (US air-pollution authority), proper name |
| NHG | Needle-displacement sensor (diesel systems) |
| SOP | Start of production |
| FAT | Failcode Automatic Transmission. Output line for error codes for transmission control (Mazda) |
| RW | Control travel |
| TEMP. SCH. | Temperature switch |
| EHSW | Electrohydraulic positioner |
| WIG | Wiper pulse transmitter |
| OOR | Out of Range |
| PLR | Pneumatic idle speed control |
| EPK | Electropneumatic kit |
| SIL | Seat electrical system, left |
| KGE | Crankcase ventilation |
| EACM | Exhaust Aftertreatment Control Module |
| ESC | European Stationary Cycle (SAE J1930) |
| DSU | Pressure sensor for ambient pressure |
| NTC II | Idle speed increase |
| EV | Injection valve or Inlet valve of pressure control valve or Inlet valve of ABS system |
| DOHC | Double overhead camshaft, usually part of engine designation |
| CH4 | Methane, main component of natural gas (90 percent), compressed as fuel for natural-gas-powered cars. See also CNG |
| MFU | Multifunction clock |
| NLK | Follow-on piston |
| IMMO | Immobilizer, an electronic anti-theft device in a vehicle that prevents the engine from starting without the correct key |
| CAFE | Corporate Average Fuel Economy |
| ISU | Intelligent switching unit (Siemens) |
| REA | Resonance detection |
| M-HEAT | Mirror Heating, Spiegelheizung (Opel) |
| KSB | Cold-start accelerator, with distributor injection pumps |
| UB | Battery voltage, supply voltage at terminal 30 |
| KS | Fuel reservoir, or Knock sensor |
| DIESELGATE | VAG software numbers containing dieselgate patches introduced in 2016 are starting from 9976 / 9977 / 9981, so pre-dieselgate will be everything below 9976 and 9977, sometimes 9978 is the last pre-dieselgate. |
| SHZ | Heated seat |
| VECC | Vehicle Emission Control Center (Part of MEP China) |
| NEDC | New European driving cycle (procedure for fuel consumption measurement). See also NEFZ |
| CIM | Column Intergration Module |
| EHS | Electrohydraulic control module |
| QB | Quality assessment |
| VL | Left front, or Full load, engine operating state |
| MBS | Engine-brake switch |
| AZG | Adaptive cylinder equalisation. Quantity equalisation control. |
| DIO | Data input/output. Interface for exchanging data in both directions. |
| AIR | Secondary Air Injection |
| UD-MODUL | Vacuum module. Valve for switching and measuring intake manifold pressure |
| SBR | Start-of-injection control |
| TBB | Drum-brake shoes |
| VR | Right front or Distributor pump with radial piston |
| WSK | Converter clutch used in semiautomatic transmission |
| PHI | Phi: Greek letter used to designate angles. |
| VKP | Programmable variant coding |
| T | Temperature (such as T-comp, compression temperature) |
| UEC | Underhood Electrical Center, Opel designation for engine-compartment electronics module |
| OSRVM | Outside rear-view mirror (Opel) |
| PHS | Park heater system |
| VSG | Composite safety glass |
| T.O.C.S. | Throttle valve control system |
| DS | Pressure switch or Pressure sensor |
| DM3/H | Dm³/H: cubic decimeters per stroke, unit |
| SVM | Seat adjustment motor |
| XS | Extreme sport. Selection option for extremely sporty driving with automatic transmissions |
| UUAA | Used Up All Adjustment UUAAA |
| NB | Commercial-vehicle brake |
| GMA | Yawing moment buildup delay |
| HP | Hydraulic pump |
| EBD | Electronic braking differential or Electronic brake force distribution (see also EBC and EBV) |
| GSR | Belt tensioner, usually proper name |
| ENG FAIL | Engine failures, diagnosis line for outputting errors |
| BPA | Start of paraffin precipitation. Also called cloud point. Temperature at which paraffin crystals precipitate out of diesel fuel. |
| EMAB | Shutoff by electromotor |
| SBE | Seat-occupied detection |
| EPSV | Electrical injection adjustment |
| POBSY | Pedestrian protection optimised bumper system. Ford bumper system made from energy-absorbing foam plastics to protect pedestrians. |
| QS | Quality assurance |
| K | K: small K: channel K-line: bidirectional line between control unit and tester |
| VSC | Voltage supply control. Battery management system (Mercedes) |
| CMP | Camshaft positioning sensor |
| KG/H | Kilograms per hour, unit |
| EHR | Electrohydraulic lifting control |
| IMP | Pulse(s) |
| WPA | Worst Performing Acceptable |
| WHDC | World Harmonized Driving Cycle |
| CRP | Common Rail pump. Special high-pressure pump for the Common Rail system, or Car phone (Opel) |
| SEA | Selective Enforcement Audit |
| PAM | Parking assistant module (Opel) |
| PTS | Park-Tronic System. Parking aid. See also PDC. |
| NTC1 | Intake air temperature (in °C) |
| INA | Information display for ASR systems |
| SRM | Sun Roof Module |
| MVEG | Motor vehicle emission group, exhaust-gas classification for passenger cars |
| AFS | Advanced front-lighting system. Variable light distribution via movable reflectors |
| CD | Compact disc |
| DLOC | Device location, Einbaulage einer Komponente |
| EWD | Single-coil actuator, servomotor with one winding |
| LSZ | Light-switching centre |
| FSK | Frequency shift keying |
| RCA | Republic of Central Africa |
| HSV | High-voltage distribution or Hydraulic start lock |
| US06 | Aggressive High Speed Driving Cycle |
| LDF | Boost-pressure sensor |
| WSG | Separate control unit |
| FRS | Freewheel pulley |
| HID | Hill descent (sensor). Sensor that registers downgrades or vehicle rolling. See HDC. |
| BOU | Brake operating unit, controls and activates the brakes |
| AUS | Australia |
| EPI | Exhaust Port Injection, Nacheinspritzung in Auslasskanal (Toyota) |
| CEGR | Cooled Exhaust Gas Recirculation |
| LFT | Air temperature sensor, or Long (term) fuel trim (to counteract aging symptoms). See also LTFT. |
| ST | System tester |
| UVS | Rollbar and variable sunroof control (Mercedes) |
| CCV | Closed Crankcase Ventilation |
| EPT | Electronic pressure transmission |
| DTC | Diagnostic trouble code |
| TSZ-IZA | Transistor ignition with ignition coil in distributor |
| REL | Relay |
| RME | Rapeseed methyl ester, alternative fuel |
| RWG | Control-travel sensor |
| EU | European Union |
| FS | Driving-mode switch or Driver side |
| AS-NO | Exhaust-gas sensor for NOx (nitrogen oxide) content |
| QHS | Quick heat system. Rapid diesel pre-heating system. |
| BAR | Bar, physical unit |
| ESR | Electronic slip reduction, another name for ASR, or Electrical sunroof, electrically operated sunroof (or lifting roof) |
| MAR | Quantity compensation control |
| DI | Distributor Ignition (SAE J1930) |
| BA | Acceleration sensor or Brake assistant (Mercedes Benz) |
| BV | Brake valve |
| UV | Ultraviolet. Used mostly in conjunction with light or radiation. |
| ME | Motronic with electronic gas pedal, usually proper name, or Control unit for volume regulation in diesel systems, usually proper name |
| GGF | Possibly, if necessary |
| CQC | China Quality Certification Center (Part of CNCA China) |
| NZ | New Zealand |
| HHT | Hand-held tester (such as KTS500 or PMS100) |
| LOS | Emergency program (EEC IV) |
| IQ | Injection Quantity as requested by the accelerator position |
| KL | Terminal |
| RIV | Control pulse method (diesel) |
| TEMP | Temperature |
| KM | Kilometer, physical unit |
| IHKA | Integrated heating and air conditioning system (BMW) |
| LER | Idle limit-speed control |
| KAM | Keep-alive memory |
| CCFA | French Automobile Manufacturers Association (Comité des Constructeurs Français d’Automobiles) |
| APU | Auxiliary Power Unit |
| VKS | Variant coding with plug |
| TQ | Time quantity (usually TQ signal). Fuel consumption signal. |
| BEVx | Battery Electric Vehicle with Range Extender |
| HKZ | High-voltage capacitor ignition |
| KRS | Anti-knock control interface or Fuel return valve |
| ASIC | Application Specific Integrated Circuit |
| ISF | Vehicle information system |
| SLE | Secondary-air injection |
| APS | Autopilot system |
| ETC | Electronic throttle control, usually proper name or Electronic traction control |
| CAN-L | CAN Low. One of the two data lines in the CAN bus system. See also CAN. |
| ELRA | Electronic automatic restraint. Automatic seat belts (VW) |
| MPFI | Multi-point fuel injection, electronic, usually proper name |
| SRS | Safety restraint system (generally includes airbag and seatbelt tensioner, normally controlled by a common control |
| TZ-I | Transistor ignition with inductive sensor |
| STC | Stability and traction control |
| MFD | Multifunction display |
| NGV | Natural Gas Vehicle |
| FFR | Vehicle master computer. Diagnostic gateway in vehicle, installed in combined instruments or central electrical system. Also contains the immobilizer. |
| MPI | Multi-point injection, fully electronic engine control, usually proper name |
| ELAB | Electrical idle shutoff valve |
| KMV | Refrigerant compressor |
| HFM | Hot-film air-mass sensor or Special engine control in which load detection takes place via a hot-film air-mass sensor |
| MVLDR | Solenoid valve for boost pressure control |
| ETI | Equipment and Tool Institute |
| KVRS | Evaporative emission-control regeneration system, also referred to as tank ventilation system |
| PC | Power control or Personal computer |
| DR | Pressure regulator |
| AUS | Ultrasonic Alarm System |
| FPM | Accelerator pedal module |
| OFFSET-V | Voltage offset |
| FAC | Failcode Air Conditioning. Output line for error codes for air conditioner (Mazda) |
| AK | Automatic clutch. Clutch operates when driving off, shifting, and stopping. |
| FI | Filter |
| WSH | Wiper lever |
| FHM | Power window motor |
| EMF | Electromechanical parking brake. |
| DSA | Dynamic stability assistance |
| KA | Knee airbag |
| SKT | Scale units |
| MA | Mono-Motronic, petrol injection system, usually proper name |
| PKW | Passenger car |
| DQ | Delta quantity, difference quantity. See also Q. |
| TBI | Throttle body injection, central injection |
| UDDS | Urban Dynamometer Driving Cycle |
| CAT | Catalytic converter |
| KSS | Cold-start control |
| N75 | The ECU can operate the valve to vent some of this pressure so the wastegate either does not open, or opens less over a 100 millisecond period (1/10 of a second) |
| DKI | Throttle valve actual value. Current throttle-valve voltage |
| C | Capacitor, capacitance, or Chassis (OBD error codes, for example) or Cuba |
| ZAB | Central display and operating unit for information |
| EEM | Electrical energy management. Higher-order system that coordinates the interaction of the generator, battery, voltage converter, drive train, and loads. See also EES and VSC. |
| CAN-LO | CAN Low. One of the two data lines in the CAN bus system. See also CAN. |
| RTR | Reverse-flow temperature control |
| RB | Robert Bosch |
| TCU | Transmission control unit |
| CAS | Collision Avoidance |
| ELZ | Electronic ignition |
| SOI | Start Of Injection, injection start as calculated from the injection quantity. |
| FMEA | Failure Mode and Effects Analysis |
| ATF | Exhaust-gas temperature sensor or Automatic transmission fluid |
| HEV | High-pressure injection valve |
| DSB | Pressure sensor in/for combustion chamber |
| YV | Venezuela |
| LT | Model designation for VW Transporter, proper name |
| COP | Conformity of Production |
| EPA | Environmental Protection Agency, air purity monitoring organisation |
| PLU | Pierburg measurement cell, or Pierburg Aviation |
| SPOR | Sporadic |
| ESPV | Electrical injection adjustment |
| E2 | Software adapted for Euro 2 emission standard, see also CAToff, LAMBDAoff, EGRoff, DPFoff |
| PEHKS | Pedestrian protection hood kinematics system. Ford mechanical system that raises the hood (bonnet) in the case of an impact (such as hitting a pedestrian). See also POBSY. |
| AYC | Active yaw control. Rear-axle limited-slip differential (Mitsubishi). See also ACD. |
| DFHR | Speed sensor, right rear |
| OAI | Octane adjust input |
| FAF | Fresh Aik Flow |
| SET CONTRO | Program command related to controller |
| BLDC | Brushless direct current motor |
| TCE | Trailer central electronic, central electronics system for trailer |
| PHEV | Plug-in Hybrid Electric Vehicle |
| MUX | Multiplexer or multiplex signal |
| FSR | Driving stability control |
| NVF | Navigation and traffic control |
| SCHALT | Switch |
| ARF | Exhaust-gas recirculation |
| ASC+T | Automatic stability control, regulated force transmission with traction control |
| MSTS | Microprocessor spark timing system, electronic ignition with map control (ELZ), or Multi spark timing system, function as for EST. MSTS, however, is not an integrated part but rather a separate ignition control unit |
| LWL | Optical fiber |
| VRD | Vario nozzle, nozzle with variable radius |
| AHM | Auxilliary Heater Module |
| SIPS | Side-impact protection system (Volvo) |
| ECC | Electronic climate control, electronically controlled air conditioner (Opel) |
| TLA | Temperature dependent idle increase, with distributor injection pumps |
| CCM | Really ccm or cm³, cubic centimeters, unit of volume |
| BTC | Bosch traffic controller, traffic monitoring system |
| T-VIS | Toyota variable intake system (cut-in at 4500 rpm in 16-valve engines) |
| T-TOTAL | Total measurement time |
| SELECT HIG | Select-high control for commercial-vehicle ABS systems. The pressure level is geared to the wheel running with the higher coefficient of friction. |
| NFZ | Commercial vehicle (lorry, truck) |
| RG | Route guidance (Travel Pilot) |
| SNR | Part number or Record number |
| DME | Digital Motor Electronics (Motronic), system name, proper name |
| LTF | Air-temperature sensor |
| CDI | Common Rail direct injection (in Mercedes and MCC) |
| SID | System Information Display |
| SBC | Sensotronic Brake Control, part of EHB (electrohydraulic brake) system |
| EPB | Environmental Protection Bureau (SAE J1930) |
| SEFI | Sequential fuel injection, usually proper name |
| CELIS | Central lighting system (Hella) |
| ESG | Single-pane safety glass or Electronic switching unit for trailer detection (used in brake systems) |
| OBF | Upper control panel. Above or on the dashboard, some vehicles have switches or buttons, such as for the rear-window defogger. These elements together comprise a control panel, which is referred to as the upper control panel to distinguish it from another control panel near the gearshift lever or below the radio. |
| NVLD | Natural Vacuum Leak Detection |
| V/MS | V/ms: volts per millisecond, unit for voltage per time. |
| EOP | Engine Oil Pressure |
| KX | Jetronic, continuous, with oxygen sensor control, usually proper name |
| USO | Pumpenkennfeld - pump voltage (duration) |
| ALB | Automatic load-dependent braking force control |
| CCW | Counter clockwise, e.g. for indicating direction of rotation of engine |
| LN | Jetronic with air-flow sensor, intermittent, n=version, usually proper name |
| PANS | Pans: Intake air pressure (in hPa) |
| DIS | Direct ignition system, proper name |
| PFI | Port fuel injection, inlet-channel injection |
| SL | Select low |
| ROK | Republic of Korea |
| PDOE | Nozzle opening pressure |
| ISO | International Organisation for Standardisation |
| ESV | Feed valve or Injection valve |
| MFA | Measurement window, start or Multifunction display |
| IR | Individual control with commercial-vehicle ABS systems, or Infrared, or Iran |
| TANS | Intake air temperature (in °C) |
| DDE | Digital Diesel Electronics, system name, usually proper name, or Direct data exchange |
| TBS | Test Brake System. Excitation lead for ABS system (Mazda) |
| PIP | Profile ignition pickup, ignition output circuit (Ford) or Signal of Hall sensor for crankshaft RPM and position |
| LNG | Liquefied Natural Gas |
| GS 1.2 | Electronic transmission control, Version 1.2, system name, proper name |
| LTCC | Low temperature cofired ceramic, multilayer ceramic technology |
| CFR | Code of Federal Regulations – US |
| KU | Clutch |
| DVD | Digital versatile disc. Storage medium with significantly higher storage capacity than a conventional CD. |
| PSPS | Power steering pressure switch |
| TSZ-H | Transistor coil ignition with Hall sensor |
| SSU | Triggering device for side airbag |
| T-IN | Inflow temperature (actual) T-in (nom.): Nominal inflow temperature |
| RRDM | Rear Right Door Module |
| HDS | Urea metering system, used with diesel vehicles to prevent or reduce soot emissions |
| OBD | On-board diagnostics or off-board diagnostics, vehicle-internal diagnosis with internal or external test unit, usually proper name |
| DDS | Diesel theft protection |
| DPF | Diesel Particle Filter. New or loading up to 15% will be engine at idle and operating temperature > 0-10 mbar, > 1500/min > 5-20 mbar, > 2000/min > 15-35 mbar (if < 14 DPF may be cracked inside). DPF loading up to 40-60% if regeneration required or not functional having engine at idle and operating temperature > 1500/min > more than 50-80 mbar, > 2000/min > more than 150 mbar |
| PNAB | Pneumatic adjustment device |
| E | Electrical fan, or Fuel-injection engine, or Economy (shifting program for automatic transmissions), or Spain (España) |
| TR | RPM information, or contact roller, or Turkey |
| SLA | Safety lamp |
| ELB | Electronically controlled brake |
| DSTC | Dynamic stability and traction control |
| USA | United States of America |
| ECM | Electronic Control Module, system name, usually proper name |
| ZDE | Intermediate RPM adjuster |
| WK | Converter clutch |
| DYN | Dynamic |
| MTM | Engine measurement technology module |
| ITGS | Intelligent traffic guidance system (Mercedes) |
| DIAGL | Diagnosis L line, signalling line |
| WIF | Water In Fuel |
| ZDT | Cyclical nozzle-exchange procedure |
| MOLIS | Modular lights system. LEDs in modular system for rear lights, for example (BMW) |
| PJ | Pilot-Jection |
| PWG | Pedal position sensor, usually proper name |
| TEC | Total electronic control |
| OORH | Out of Range High |
| ARMADA | Triggering unit for restraint systems with external differentiated triggering. Airbag system from DaimlerChrysler. |
| PVE | Production Vehicle Evaluation |
| SZ | Opacity number, or Coil ignition, possibly with interrupt contacts or Switching-time program (determines switching time). |
| IAM | Independent after-market. Service or spare-parts dealers independent of vehicle manufacturer. |
| BIP | Start pulse |
| MFI-C | Continuous multipoint fuel injection (electronic) |
| TC | Traction control, auxiliary function with ABS |
| CAL | California |
| LLDRAN | Idle speed increase |
| KMM | Continuous volume meter, checks fuel delivery |
| LRR | Smooth-running control, or Long-range radar (component of ACC system with detection range up to 120 m) |
| DLI | Distributorless ignition |
| HD | Heating wire or Lifting roof |
| PBSL | Park brake shift lock. Selector lever lock for automatic transmission (Opel) |
| DTI | Diesel direct-injection with distributor pump (Opel) |
| FGB/AGB | Speed limiter / automatic speed limiter, usually proper name |
| TLK | Temperature dependent idle correction |
| VGT | Variable Geometry Turbo |
| RDV | Reverse-flow throttle valve |
| MUD | With vacuum |
| MNEFZ | Modified new European driving cycle (exhaust-gas test cycle). See also NEFZ. |
| RPA | Flat tyre indicator |
| MEG | Motronic with ETC and transmission control |
| KUKO | Coupling head |
| HH | HH division, 4/4 division of brake circuit: circuits 1 and 2 brake all wheels. |
| MHDI | Mechanical high-voltage distribution ignition |
| CO2 | Carbon dioxide, non-poisonous gas produced during combustion, also known as greenhouse gas |
| DD | Fuel pressure limiter |
| ALR | Automatic longitudinal control |
| IPS | Intelligent Protection System, integrated two-stage airbag system with retractable pedals, head/shoulder airbags, and active headrests. Used in Ford Mondeo. |
| ZDR | Intermediate RPM control |
| KF | Fuel filter |
| TCMV | Technical Committee Motor Vehicles |
| HAC | Height compensation |
| AECS | Auxiliary Emissions Control Strategy (The EU term for AECD) |
| STAT | Static |
| GATES | Global automotive telematic standard |
| OCV | Open Crankcase Ventilation |
| TF | Temperature sensor |
| EGD | Electronically regulated shock absorption |
| TVSV | Temperature dependent vacuum switching valve |
| KVS | Fuel distributor piece |
| NBS | Needle lift sensor (diesel) |
| EML | Electronic engine performance control, proper name |
| HDEV | High-pressure injection valve |
| AOS | Automatic Ocupant Sensing |
| SRA | Headlight wiper system |
| DZ | Breakthrough ignition or Algeria |
| RI | Indonesia |
| DDA | Digital directional antenna, special antenna which blocks out radio wave reflection interference |
| FLA | Vehicle performance analysis, product name for performance test stand (Bosch), or Spring-loaded idle stop |
| ECON | Electronic carburetor, n=version, usually proper name |
| FSS | Delivery signal sensor, or Flexible service system |
| ALDA | Absolute measurement, boost-pressure dependent full-load stop |
| ACC | Adaptive Cruise Control |
| UMTS | Universal Mobile Telecommunications System. Standard for the 3rd generation of mobile radio communications. Is to replace the analogue radio system over the long term. |
| L/H | Liters per hour, unit |
| ISS | Joint venture (Bosch, Michelin) for developing integrated vehicle dynamics systems |
| DG | Speed sensor, or Speed sensor for transmission input speed |
| HZR | Heating control. Simple type of air conditioner. |
| MDF | Mass of wheel-speed sensor, usually with an indication of the particular sensor (left front, right front, etc.) |
| ALV | Axle load distribution (drive-off aid) |
| POPS | Enable Pops and Bangs by setting DNWEK and DNWEKFS set to 7100 RPM or adjust Ignition table, 20kpa row from 5000rpm to 6750rpm set 0deg - light pops and bangs, retard for louder pops, advance for ligher. |
| PLD | Pump-line-nozzle, diesel injection technique (new designation is UPS) |
| MSA | Designation for diesel injection systems having an electronic volume control, start-of-injection control, and exhaust-gas recirculation. Systems without exhaust-gas recirculation are designated simply as MS. |
| KOM | Commercial bus and rental vehicles |
| SU | Soviet Union |
| OT | Top dead centre |
| IL | Israel |
| SP | Safety testing, usually in conjunction with testing of brake system |
| EWL | External warning lamp |
| FPK | Freely programmable combined instruments |
| PSV | Partial intake-manifold pre-heating |
| DZG | RPM sensor |
| SPI | Single point injection, usually proper name |
| DZV | Digital ignition, fully electronic |
| MI | Miles, physical unit |
| THS | Toyota hybrid system. Hybrid of combustion and electrical drive, with electronic control. |
| PS | Test step or Pump control or Horsepower, unit of work performed by motor vehicles |
| ADP | Alternative Durability Procedure |
| AGR | Exhaust-gas recirculation |
| DI | Direct (diesel) injection, system name, usually proper name |
| LDR | Boost-pressure control, or Idle speed control |
| VPC | Volvo Personal Communicator. SCC element with fingerprint sensor that detects the identity of the driver and makes driver-specific adjustments. |
| ETV | Electronic throttle valve |
| AECD | Auxiliary Emission Control Device |
| KZS | Capacitor intermediate storage |
| EGROFF | Process to physically close the Exhaust Gas Recirculation engine part alogside with modifying its ECU with the removal of DTC P0400 - P0406, P0408 - P0411, P0489 - P0490, P1403 - P1406, P1462, P2143, P2527 and sometimes P0101 on VAG |
| IDS | Interactive dynamic driving system |
| DBE | Roof operating unit, control unit in Mercedes, usually proper name |
| SPN | Suspect Parameter Number |
| MIEL | Middle electrode (spark plug) |
| EST | Electronic spark timing, electronic map ignition control. See also MSTS |
| EU4 | European exhaust-gas standard, valid from 2005 (levels: HC 0.1, CO 1.0, NOx 0.08) |
| GDB | Regulated differential brake |
| EZF-H | Electronic ignition system with map, trigger by Hall sensor |
| DK | Throttle valve or Denmark |
| LHA | Air-side automatic heater |
| SLR | Select-low control for commercial-vehicle ABS systems. The pressure level is geared to the wheel running with the lower coefficient of friction. |
| K-CAN | Body CAN bus. Low-speed CAN bus for comfort-system and body electronics. See also PT-CAN and SI-BUS. |
| TAU | Automatic temperature system |
| TEMPF | Temperature sensor |
| VAT | Intake-air temperature sensor |
| STO | Self-test output signal |
| NTC | Negative temperature coefficient, thermal resistor with negative temperature coefficient, so-called hot conductor |
| USG | Non-interrupting manual transmission. Two clutches (drive-off and load-shift) enable electronically controlled driving without shifting interruptions. |
| ASC | Automatic stability control, controlled force transmission |
| VSS | Volts peak-to-peak, unit for special voltage values, measures difference between maximum and minimum voltage levels or Vehicle speed sensor, or Vehicle security systems |
| INT | Integrator |
| PGN | Parameter Group Number |
| RAS | Rear-axle steering. Actively steered rear axle used in buses, for example. |
| FP | Accelerator pedal or Delivery pump |
| BKL | Brake indicator light |
| GB | Yawing moment restriction or Great Britain |
| EDG | Electronic diesel control with integrated transmission control. MCC control unit, proper name. |
| ESA/IZA | Map ignition, ignition coil in distributor |
| TMB | Door module, passenger side |
| IMM | Immobilizer, an electronic anti-theft device in a vehicle that prevents the engine from starting without the correct key |
| EVR | Electronic vacuum regulator |
| KSZ | Fuel distributor or distribution |
| PPG | PPG module: Periphery program module; module containing control unit diagnostic programs or other CompacSoft programs, proper name. |
| BR | Brake control for ASR or Brazil |
| LDA | Boost-pressure-dependent full-load stop, with distributor injection pumps |
| CY | Calendar YearDEF |
| LAM | Idle emissions measurement |
| HDDE | Heavy Duty Diesel Engine |
| RVP | Reid Vapor Pressure |
| AGRE | EGR control output stage (Endstufe) |
| HEI | High performance ignition system, transistorized ignition, contactless ignition |
| FCV | Fuel cell vehicle. Vehicle with fuel-cell drive, up to now only a Ford prototype. |
| NBF | Needle lift sensor (diesel) |
| SIH | Sitzheizung |
| HDP | High-pressure pump |
| STH | Stationary-vehicle heater |
| J | Japan |
| ZEV | Zero Emission Vehicle |
| HK | Height correction or Hong Kong |
| AWS | Evaluation switching unit (Bosch KH) |
| KW | Crankshaft or crankshaft angle or shortwave (radio) |
| BWN | Bosch Workshop Network, proper name |
| ISDN | Integrated Services Digital Network: digital telephone and data network with integrated services |
| UEDS | Excessive-speed switch |
| ECE | Economic Commission of Europe, proper name |
| EHA | Electronic automatic heater, usually proper name |
| CSERS | Cold Start Emission Reduction Strategy |
| AMOX | Ammonia Oxidation |
| ARMIN | Trigger unit for restraint systems with integrated emergency-call control |
| SDS | Intake-manifold pressure sensor |
| EUV | Electro-reversing valve |
| TI | Injection signal (t=time, i=ignition) |
| PAG | Polyethylene glycol oil, low-temperature oil |
| PEMS | Portable Emission Measurement System |
| VCV | Vacuum control valve |
| VTG | Variable turbine geometry. The turbine has movable guide blades, which can be varied depending on the operating state of the vehicle. A turbocharger with variable turbine geometry offers the advantage that it is more responsive than a conventional turbocharger with fixed turbine geometry. |
| WS | Wiper or Travel sensor |
| IND | India |
| GRA | Speed control system. Alternative term for cruise control. |
| SVC | Saab variable compression. The cylinder head is tilted in order to modify the compression ratio, or Speed volume control. Speed-dependent volume control for car radios. |
| ETS | Electronic thermostat control, usually proper name or Electronic traction system, see ETC |
| ELD | Electrical load-peak damping |
| MY | Model year |
| KSA | Kingdom of Saudi Arabia |
| PH | Pressure high, high pressure |
| PPS | Pedal position system, or Pedal position sensor |
| EPS | Engine Position Sensor (SAE J1930) |
| JW | Company car(s) |
| RSV | Check valve, prevents undesired reverse-flow of liquids or gases |
| RQS | Reductant Quality Sensor |
| HDK | Half-differential short-circuit ring travel sensor |
| DSV | Pressure control valve |
| ATWS | Anti-theft warning system (Opel) |
| GSK | Sheathed element glow plug |
| DKP | Throttle valve potentiometer |
| U | Below, underneath or Voltage |
| WSZ | AC ignition |
| CRS | Common Rail system. Special diesel direct-injection system in which the fuel is distributed to the injectors via a common line (Common Rail) under high pressure. |
| VP | Distributor pump (usually factory-internal designation). See also VE |
| DFM | Dynamo field monitor. Output for recording dynamo field |
| P-FP | P-FP: Delivery pump pressure. |
| SFTP | Supplemental FTP |
| SME | Stepping-motor electronics |
| NPB | Delivery volume normal test stand (special tester for injection pumps) |
| AKT | Active, or Current |
| FGR | Speed control, usually proper name |
| VDC | Vehicle distance control or Vehicle dynamics control |
| LMM | Air-mass sensor, or Air-flow sensor |