Abbreviations
Abbreviations
| abbreviation | description |
|---|---|
| CRIN | Car radio identification number |
| APS | Autopilot system |
| HSV | High-voltage distribution or Hydraulic start lock |
| TMS | Telematic system |
| SPM | Mirror memory, usually proper name |
| EPW | Electro-pneumatic transducer, serves to transform electrical signals into pneumatic signals such as in boost-pressure regulation |
| BIP | Start pulse |
| ZA | Ignition suppression or South Africa |
| SLE | Secondary-air injection |
| NS | Fog light(s) |
| ECONZ | Electronic carburetor and electronic ignition, n=version number, usually proper name |
| FFG | Accelerator pedal |
| KZS | Capacitor intermediate storage |
| DZG | RPM sensor |
| WUEK | Actually WUK, torque converter lock-up clutch, prevents slip in the torque converter |
| CEM | Centralised Electronic Module (Volvo) |
| RZ | Wheel brake cylinder |
| HVAC | Heating |
| UNI1 | Additional lines on universal adapter cable, used to read out flash codes or for special purposes |
| CAN-LO | CAN Low. One of the two data lines in the CAN bus system. See also CAN. |
| FTP | Federal Test Procedure |
| KMM | Continuous volume meter, checks fuel delivery |
| ALB | Automatic load-dependent braking force control |
| DKE | Throttle valve incrementation bit |
| ARFR | Exhaust-gas recirculation rate |
| EPI | Exhaust Port Injection, Nacheinspritzung in Auslasskanal (Toyota) |
| ASR 3 | Transmission slip control, integrated, system name, proper name |
| DD | Fuel pressure limiter |
| IAT | Intake Air Temperature |
| COMAND | Cockpit management and data systems. System for data exchange and driver information management. |
| SCO3 | Supplemental Federal Test Procedure with air conditioning |
| AWG | Evaluation switching unit |
| KS | Fuel reservoir, or Knock sensor |
| SI-BUS | Safety and information bus system. See also K-CAN and PT-CAN. |
| KP | Mappack is a WinOLS complete file containing definition for Map and Axis Data, Factors, Offsets and Precision |
| QGS | Quick glow system. Rapid pre-heating system for diesel engines. |
| VVA | Variable valve actuation. Variable valve control between cams and valves. Operates electrohydraulically. Duration and width of opening can be varied (Fiat, Lancia) |
| SCU | Sensor and control unit. Control unit with integrated radar sensor, main component of ACC system. |
| DPHI | Dphi, delta phi, difference angle. See also PHI. |
| CI | Ivory Coast |
| MEAB | Mechanical shutoff device (diesel EDC). In newer systems, the shutoff is electrical (see ELAB). |
| TI | Injection signal (t=time, i=ignition) |
| TV | Offset time of oxygen sensor control |
| OEM | Original equipment manufacturer |
| DFSO | Deceleration Fuel Shut Off |
| FDR | Trip computer or Vehicle dynamics control |
| ELFI | Electronic vehicle identification. Component of VW ELSA service information system. |
| TFA | Test of radiator fan |
| OBM | On-board measurement |
| MUXPORT | Multiplexer-Port, Schnittstelle am PC, an die der Multiplexer angeschlossen ist oder angeschlossen werden kann |
| V | V: Volt, physical unit, or carburetor engine, or valve, or viscose, or fan, or front v: Front, or velocity |
| SNA | Automatic momentum utilisation |
| LRD | Load response drive, alternative multifunction control |
| UG | Lower limit Lower tolerance limit |
| CAN-HI | CAN High. One of the two data lines in the CAN bus system. See also CAN. |
| ELSA | Electronic service information system. VW system for authorised workshops (garages). Comprises the components ELFI, ELWIS, and ETKA. |
| RDP | Reductant Delivery Performance |
| HPCR | High Pressure Common Rail |
| UPS | Unit Pump System, new designation for PLD systems |
| ULW | Ultra lightweight |
| SEC | Seconds, physical unit |
| FGR | Speed control, usually proper name |
| PROG | Programming input |
| DeNOx | NOx Reduction Function |
| RKS | Tire check system |
| GBA | Seat belt positioner drive |
| FB | Fast burn, rapid spread of flame front or Start-of-delivery, key parameter in diesel injection systems or Remote control |
| PM | Particulate Matter (SAE J1930) |
| RF | Radio frequency, radio signal |
| EMF | Electromechanical parking brake. |
| D | Diesel engine or Decimal number or Drive (position of automatic-transmission selector lever) or Germany |
| TZ-I | Transistor ignition with inductive sensor |
| FPR | Fuel pump relay |
| BTS | Battery disconnect switch (Mercedes) |
| EDIS | Electronic documentation and information system (Bosch) |
| EDC | Electronic diesel control, usually proper name |
| CAS | Computer aided service, proper name |
| BEA | Bosch Emissions Analysis, product name for exhaust-gas tester (Bosch) |
| TZ-H | Transistor ignition with Hall sensor |
| LL | Idle, engine operating state or Left-hand drive or LL division, triangular division of brake circuits: 2 circuits in front, one in rear. |
| BAS | Brake assistant system |
| EZF-I | Electronic ignition system with map, trigger by inductive sensor |
| OORH | Out of Range High |
| MFD | Multifunction display |
| DRV | Pressure regulator valve |
| IRQ | Iraq |
| HBZ | Master brake cylinder |
| CI | Compression Ignition (SAE J1930) |
| DR | Pressure regulator |
| DFS | Double-spark coil, supplies two cylinders |
| TCMV | Technical Committee Motor Vehicles |
| MIL | Malfunction indicator lamp |
| AK | Automatic clutch. Clutch operates when driving off, shifting, and stopping. |
| CLCS | Closed Loop Control Strategy |
| VW | Compensating resistor or Volkswagen, vehicle maker, proper name |
| TZ | Transistor coil ignition with hybrid component |
| AHM | Auxilliary Heater Module |
| SEFI | Sequential fuel injection, usually proper name |
| KLA | Automatic climate control |
| EUL | End of Useful Life – also referred to as Full Useful Life in the EPA emission regs FUL |
| TEMPF | Temperature sensor |
| MM3/H | Mm³/H: cubic millimeters per stroke, unit |
| MICROPLEX | Fully electronic ignition system with knock control |
| 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). |
| AS-NO | Exhaust-gas sensor for NOx (nitrogen oxide) content |
| SCHALT | Switch |
| EBV | Electronic brake force distribution (see also EBD and EBC) |
| Z.Z. | Currently, at the moment |
| M/S2 | M/s²: meters per second per second, physical unit for acceleration |
| THS | Toyota hybrid system. Hybrid of combustion and electrical drive, with electronic control. |
| EGT | Exhaust Gas Temperature |
| BES | Base Emission Strategy |
| DKS | Throttle valve switch |
| FSG | Chassis control unit or Fill-level sensor |
| TZS | Thermal time switch |
| SBR | Start-of-injection control |
| ZDA | Intermediate RPM stop |
| DMV | Diesel solenoid valve |
| MAL | Malaysia |
| VM | Adjustment motor or Combustion engine |
| LH-JETRONI | Same as L-Jetronic with hot-wire air-mass sensor, usually proper name |
| TSP | Trailer stability program, ESP type system for trailers, designed to prevent trailer skid (Opel) |
| T-OVER | Overflow temperature |
| LFB | Load-dependent start-of-delivery, with distributor injection pumps |
| FDS | Ford diagnostic system |
| IIA | Integrated ignition system |
| JA | Jamaica |
| SRS | Safety restraint system (generally includes airbag and seatbelt tensioner, normally controlled by a common control |
| DP | Dashpot, or Throttle valve closing damper |
| POI | Post-injection. See also PI, MI, and HE. |
| TLK | Temperature dependent idle correction |
| SZ | Opacity number, or Coil ignition, possibly with interrupt contacts or Switching-time program (determines switching time). |
| DEE | Digital engine electronics |
| PSG | Pump control unit |
| EZF | Electronic ignition system, map-controlled |
| EPK | Electropneumatic kit |
| PE | Voreinspritzung, pre-injection. See also POI, PI, MI, and HE. |
| DKR | Throttle valve reduction or Throttle valve reduction bit |
| ETM | Electronic transmission management, usually proper name |
| CRI | Common Rail injector. Injector of a Common Rail system, comparable to the injection valve of a conventional injection system. |
| ESA/IZA | Map ignition, ignition coil in distributor |
| FBV | Parking brake valve |
| TEE | Tank installation unit |
| IBAMA | Instituto Brasileiro do Meio Ambiente E Dos Recursos Naturais Renováveis – Brazil Environmental Agency |
| ERE | Electronic inline injection system (special engine control) or Electrical regulator |
| MDV | Medium Duty Vehicle |
| T-IN | Inflow temperature (actual) T-in (nom.): Nominal inflow temperature |
| PKW | Passenger car |
| DKV | Throttle valve preset |
| EZ-K | Electronic ignition timing with knock controls, proper name |
| EEPROM | Electrically erasable programmable read-only memory, proper name |
| OEDS | Oil pressure switch |
| SET CONTRO | Program command related to controller |
| LWR | Headlight vertical aim control |
| LOAD | Calculated value of MAF and RPM |
| KSV | Cold-start valve |
| VK | Valve body |
| ECC | Electronic climate control, electronically controlled air conditioner (Opel) |
| RVP | Reid Vapor Pressure |
| MPI | Multi-point injection, fully electronic engine control, usually proper name |
| ESC | Electronic Stability Control (SAE J1930) |
| HAC | Height compensation |
| MVLDR | Solenoid valve for boost pressure control |
| USB | Universal serial bus. The USB interface permits simple connection of various peripherals to a PC. |
| DSC | Dynamic stability control |
| APU | Auxiliary Power Unit |
| MEX | Mexico |
| OORL | Out of Range Low |
| RRDM | Rear Right Door Module |
| T.O.C.S. | Throttle valve control system |
| MFI | Multipoint fuel injection (electronic) |
| YV | Venezuela |
| ANC | Active noise control. System actively influences the intake noise, reducing it by about 15 dB. |
| RFT | Run-flat tyre. Special tyre that can also be used in an emergency. |
| NAV | Navigation or Navigation system |
| TCS | Traffic centre service |
| FPM | Accelerator pedal module |
| PT-CAN | Power train CAN bus. High-speed CAN bus for drive-train electronics. See also K-CAN, SI-BUS. |
| AGRV | EGR ventilation |
| SST | Special tool or self-supporting tyre, tyre which supports itself and features limp-home properties |
| FN | Vehicle level |
| LLK | Charge-air cooling |
| BG | Brake assembly, integrated ABS, or Bulgaria |
| HID | Hill descent (sensor). Sensor that registers downgrades or vehicle rolling. See HDC. |
| LPT | Printer port or interface on PC |
| MEP | Ministry of Environmental Protection (SAE J1930) |
| PTO | Power Takeoff |
| CAN-H | CAN High. One of the two data lines in the CAN bus system. See also CAN. |
| DM | Decimeter |
| EKM | Electronic clutch management |
| FEC | Front Electrical Centre |
| DM | Diagnostic Message (SAE J1930) |
| T-COMP | Compression temperature |
| SFTP | Supplemental FTP |
| DURATION | Injection duration as calculated from the Injection Quantity (IQ) |
| MW | AM (radio), or Measurement |
| 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. |
| PL | Country code for Poland, or Pressure low, low pressure |
| WLTR | Worldwide Harmonized Light Vehicles Test Procedure |
| EV1 | Injection valve for high pressure |
| SKT | Scale units |
| SR | Side-based control |
| KU | Clutch |
| BCM | Body control module (Opel and GM) |
| EGE | Electronic air dryer unit |
| CONAMA | Comision Nacional del Medio Ambiente – Chilean National Commission for the Environment |
| UEV | Excessive-flow valve |
| CIM | Column Intergration Module |
| PRG | Program |
| SRM | Sun Roof Module |
| CC | Cruise control. See also ACC |
| HRA | Rear window washing system |
| CRT | Master computer or Continuous catalytic converter regeneration by burn off at 300°C with after-injection |
| DAB | Digital audio broadcasting |
| FACM | Fuel Additive Control Module |
| HC | High compression or Version with high compression ratio or Hydrocarbon |
| EMB | Electromechanical brake |
| DISA | Differential intake manifold system (switchable, variable-length intake manifold) |
| AMIC | Automotive Multimedia Interface Collaboration, Gremium zur Entwicklung eines Multimediastandards, besteht im wesentlichen aus führenden Automobilherstellern |
| OTA | Oxygen/titanium emissions sensor. Titanium oxide sensor. See also OZA. |
| LAMBDAOFF | A process to physically delete catalytic converter and second Lambda see also CATOFF |
| 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. |
| BARO | Barometric Pressure |
| LNT | Lean NOx Trap |
| AP | Air pump |
| WSA | Wiper system |
| ВСМ | Body Control Module |
| ERW | Energy reserve with voltage converter |
| KUKO | Coupling head |
| HT | HT division. 4/2 division of brake circuits: circuit 1 brakes all wheels, circuit 2 the front wheels |
| NF | Low frequency, or audio frequency |
| PAM | Parking assistant module (Opel) |
| 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) |
| OTF | Oil temperature sensor |
| DIGNITION | Electronic ignition system, system name, proper name |
| EHB | Electrohydraulic brake |
| AWR | Distance warning radar |
| ESN | Engine Serial Number |
| EUP | Electronic unit pump, diesel pump of pump line nozzle system (diesel injection) |
| ARMADA | Triggering unit for restraint systems with external differentiated triggering. Airbag system from DaimlerChrysler. |
| OES | Original equipment service. Service or spare parts via the vehicle manufacturer. |
| UT | Bottom dead centre |
| MN | Motronic, universal load detection (HLM, LM), n=version, usually proper name |
| WSZ | AC ignition |
| M-JET | Mono-Jetronic, usually proper name |
| SOP | Start of production |
| LWS | Steering wheel angle sensor. Component of ESP system, determines steering-wheel rotation |
| MDF | Mass of wheel-speed sensor, usually with an indication of the particular sensor (left front, right front, etc.) |
| HDK | Half-differential short-circuit ring travel sensor |
| TSZ-I | Transistor coil ignition with inductive sensor |
| HHC | Hill Holder Control, ESP system component |
| IS | Iceland |
| TR | Calculated RPM signal |
| AIR | Secondary Air Injection |
| CDCR | Compact Disc Changer Rear |
| G-SIGNAL | Crankshaft signal for TDC, 4 signals for the control unit per distributor rotation |
| LM | Air-flow sensor (also LMM) |
| 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 |
| BKU | Braking force support |
| FPK | Freely programmable combined instruments |
| 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. |
| DIA | Diagnosis |
| AKEK | Automatic child-seat detection, usually integrated into an airbag system |
| SIDC | Sid Controller |
| TMS | Telematics |
| CVN | Calibration verification number. Part of OBD, contains the checksums for parameter settings, for example. |
| AB&T | Averaging Banking and Trading |
| LFT | Air temperature sensor, or Long (term) fuel trim (to counteract aging symptoms). See also LTFT. |
| EPS | Engine Position Sensor (SAE J1930) |
| KA | Knee airbag |
| IPS | Intelligent Protection System, integrated two-stage airbag system with retractable pedals, head/shoulder airbags, and active headrests. Used in Ford Mondeo. |
| OUT | Designation on diesel pump for excess-flow restriction screw |
| CD | Compact disc |
| LDA | Boost-pressure-dependent full-load stop, with distributor injection pumps |
| MSCAN | Medium-speed controller area network. CAN bus with medium transmission rate (Opel). See also CAN, LSCAN, and HSCAN. |
| VOCS | Voice control system |
| SU | Soviet Union |
| ADP | Alternative Durability Procedure |
| SSHD | Steel sliding/lifting sunroof |
| TCSA | Temperature controlled spark advance |
| SCP | Serial communication protocol, proper name |
| TAB | Test Airbag. Excitation lead for airbag system (Mazda) |
| VKP | Programmable variant coding |
| MAX | Maximum |
| Q | Quantity, usually of fuel |
| EI | Electronic ignition |
| ODFT | Sensor for oil pressure and temperature |
| DF | Deterioration Factor (SAE J1930) |
| BKR | Braking force control |
| PV | Testing instruction |
| SSG | Seat control unit (Mercedes) |
| SULEV | Super ultra-low emissions vehicle (group in classifying exhaust-emissions levels). See also LEV, NLEV, ULEV, TLEV, and ZEV. |
| 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. |
| RZEV | Partial Zero Emission Vehicle |
| AG | Automatic transmission |
| NSW | Fog lights |
| ETC | Electronic throttle control, usually proper name or Electronic traction control |
| DIO | Data input/output. Interface for exchanging data in both directions. |
| IFZ | Infrared central locking |
| TEC | Total electronic control |
| S | S: Sensor, or super (premium) grade fuel, or sport program (automatic transmission), or Sweden s: seconds |
| EDW | Electronic anti-theft warning system or Electronic pressure transducer |
| HDEV | High-pressure injection valve |
| PANS | Pans: Intake air pressure (in hPa) |
| QSL | Quasi select low |
| NAS | Auxiliary drive switch |
| RI | Indonesia |
| SPS | Solar position sensor |
| EVAP | Fuel vapor emission control |
| MIC | Microplex (Marelli) |
| FGG | Speed sensor |
| DFHR | Speed sensor, right rear |
| PVS | Vacuum switch |
| ESGN | Special equipment, e.g., NWS, ETS, KGE, n=version no. |
| TSG | Tank level sensor or Door control unit |
| ET | Egypt |
| SGP | Singapore |
| WHDC | World Harmonized Driving Cycle |
| MPA | MPa: megapascal, physical unit |
| UDS | Unified Diagnostic Services (SAE J1930) |
| VANOS | Variable camshaft timing |
| DFVR | Speed sensor, right front |
| LCD | Liquid crystal display, usually proper name |
| AHV | Trailer brake valve |
| AHK | Trailer coupling, or Active rear-axle kinematics |
| MAT | Manifold absolute temperature |
| SLR | Select-low control for commercial-vehicle ABS systems. The pressure level is geared to the wheel running with the lower coefficient of friction. |
| FMI | Failure Mode Indicator |
| IL | Israel |
| HEI | High performance ignition system, transistorized ignition, contactless ignition |
| TID | Test identification data or Triple Info Display, driver information system in which certain data and information is displayed |
| EBD | Electronic braking differential or Electronic brake force distribution (see also EBC and EBV) |
| U | Below, underneath or Voltage |
| TFI | Electronic ignition switch (EEC) |
| BZW | Respectively, or, and/or |
| STG | Short To Ground |
| MOZ | Engine octane number. Expresses the knock resistance of petrol fuel (US variant of ROZ). |
| LSP | Longitudinal lock shutoff |
| HKZ | High-voltage capacitor ignition |
| 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 |
| RAS | Rear-axle steering. Actively steered rear axle used in buses, for example. |
| ALDA | Absolute measurement, boost-pressure dependent full-load stop |
| EV | Injection valve or Inlet valve of pressure control valve or Inlet valve of ABS system |
| SWC | Steering Wheel Control |
| AKT | Active, or Current |
| PS | Test step or Pump control or Horsepower, unit of work performed by motor vehicles |
| DV | Pressure supply, or Throttle device |
| STFT | Short-term fuel trim (for lambda-parameter correction). See also SFT. |
| RME | Rapeseed methyl ester, alternative fuel |
| DS | Pressure switch or Pressure sensor |
| ISF | Vehicle information system |
| EMS | Electronic engine control, proper name |
| EZL-H | Electronic ignition with characteristic curves, trigger by Hall sensor |
| QHS | Quick heat system. Rapid diesel pre-heating system. |
| JUMPR | In-use Performance Monitoring Ratio |
| ESG | Single-pane safety glass or Electronic switching unit for trailer detection (used in brake systems) |
| HEV | Hybrid Electric Vehicle (SAE J1930) |
| WDS | World diagnostic system (Ford tester) |
| LS | Release switch or Oxygen sensor |
| RCA | Republic of Central Africa |
| BA | Acceleration sensor or Brake assistant (Mercedes Benz) |
| RM | Reference mark |
| WR | Warmup control or Warning lamp relay |
| NLK | Follow-on piston |
| EMSE | Electromagnetic start enable |
| DLB | Compressed-air brake |
| PATA | Passive button. Button in vehicle with which a function can be set to the passive (off) state |
| EPB | Electronic Park Brake |
| EURO3 | European exhaust-gas standard, valid from 2000 (levels: HC 0.2, CO 2.3, NOx 0.15) |
| EAV | Element shutoff valve. Shuts off an individual element of the high-pressure pump in the Common Rail system. |
| SOC | Battery State of Charge |
| CTG | CAN tester (Mercedes) |
| CCW | Counter clockwise, e.g. for indicating direction of rotation of engine |
| GMR | Mixture regulator |
| RA | Rear axle, or Argentina |
| VDV | Vacuum delay valve |
| JOBD | Japanese OBD, OBD standard for Japan |
| TMC | Traffic message channel |
| OBDEL | OBD Emissions Limit Same as OTL |
| NTE | Not To Exceed |
| PSM | Porsche Stability Module. Porsche-specific designation for ESP. |
| I2 | Incremental system with two sensors |
| BR | Brake control for ASR or Brazil |
| EZV | Electronic ignition timing |
| ALU | Arithmetic and logic unit (microcomputer), proper name |
| SLA | Safety lamp |
| RTR | Reverse-flow temperature control |
| MFR | Multifunction control |
| LUN | Jetronic, intermittent, with USA functionality, n=version, usually proper name |
| MV | Solenoid valve |
| F | France |
| EHR | Electrohydraulic lifting control |
| KM | Small engine |
| VECC | Vehicle Emission Control Center (Part of MEP China) |
| LDF | Boost-pressure sensor |
| SG | Control unit |
| MISRA | Motor Industry Software Reliability Association |
| L/H | Liters per hour, unit |
| T-WAIT | Wait time |
| E | Electrical fan, or Fuel-injection engine, or Economy (shifting program for automatic transmissions), or Spain (España) |
| 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. |
| OAL | Office of Administrative Law |
| BKL | Brake indicator light |
| EPAS | Electric power-assisted steering |
| EX | Exhaust (or outlet, exhaust-gas recirc. valve, exhaust manifold) |
| RB | Robert Bosch |
| EZK | Electronic ignition with knock control |
| GDV | Constant pressure valve |
| KFZ | Motor vehicle |
| 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) |
| AGN | Exhaust-gas aftertreatment |
| FD | Date of manufacture |
| ACEA | European Automobile Manufacturers Association |
| SIPS | Side-impact protection system (Volvo) |
| KSP | Fuel reservoir |
| SHD | Sliding or lifting sunroof |
| BVSV | Bimetallic-controlled vacuum switching valve or Bimetallic vacuum switching valve |
| PML | Parametric steering, assisted vehicle steering. The related data (parameters) are stored in the control unit. |
| MFE | Measurement window, end |
| BSU | Special brake inspection |
| RON | Research octane number, see also ROZ |
| PLD | Pump-line-nozzle, diesel injection technique (new designation is UPS) |
| WEO | Western Europe except Germany |
| IAM | Independent after-market. Service or spare-parts dealers independent of vehicle manufacturer. |
| PID | Parameter identifier, part of CARB, code for current values or similar parameters, usually proper name |
| SCI | Smart-charged injection. Petrol direct injection (Ford) |
| EMAB | Shutoff by electromotor |
| K-JETRONIC | Continuous injection system, usually proper name |
| SFI | Sequential multipoint fuel injection |
| 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. |
| FKT | Function |
| DOHC | Double overhead camshaft, usually part of engine designation |
| UDB | Vacuum limiter |
| SOI | Start Of Injection, injection start as calculated from the injection quantity. |
| RAIL | Common Rail, high-pressure distribution line with Common Rail diesel systems |
| EMD | Engine Manufacturer Diagnostics |
| HPI | High-pressure injection. Direct-injection petrol engine used in Citroen and Peugeot. Comparable with GDI. |
| DTR | Distronic. Distance control system (Mercedes) |
| AICC | Autonomous intelligent cruise control (speed and distance) |
| IMM | Immobilizer, an electronic anti-theft device in a vehicle that prevents the engine from starting without the correct key |
| T | Temperature (such as T-comp, compression temperature) |
| TD | TD: Time division, engine load signal tD: Transistor speed signal, square-wave signal supplying RPM for other systems such as transmission control |
| PGN | Parameter Group Number |
| BKV | Power brakes |
| RWD | Rear wheel drive |
| LPS | Circuit board circuit |
| EZ | Electronic ignition, usually proper name |
| MKV | Multiplicative map adjustment, or Fuel ratio mixture |
| CFPP | Cold filter plugging point (for diesels) |
| FRS | Freewheel pulley |
| PSA | PEUGEOT SOCIETE AUTOMOBILE, proper name |
| EO | Engine Out |
| FE | Delivery units, parameter for determining delivered fuel amount |
| HSCAN | High-speed controller area network. CAN bus with high transmission rate (Opel). See also CAN, LSCAN, and MSCAN. |
| JTS | Jet thrust stoichiometric. Direct-injection petrol engine (Alfa) |
| BHKZ | Battery high voltage capacitor ignition |
| MDR | Membrane pressure control |
| CZ | Czech Republic |
| HE | Main injection |
| SDS | Intake-manifold pressure sensor |
| UDDS | Urban Dynamometer Driving Cycle |
| DIAGK | Diagnosis K line, communication line |
| RE | Right (often ""re"") or Inline injection pump |
| AECD | Auxiliary Emission Control Device |
| PATS | Passive antitheft system |
| OCV | Open Crankcase Ventilation |
| Q1 | Fuel quantity for cylinder 1. Similarly Q2, Q3, etc. |
| DGI | Direct gasoline injection |
| MJ | Mono-Jetronic, usually proper name or Model year |
| ZAS | Cylinder shutoff |
| KW | Crankshaft or crankshaft angle or shortwave (radio) |
| NMOT | Engine RPM |
| MBAR | Millibar, physical unit |
| MHDI | Mechanical high-voltage distribution ignition |
| LC | Low compression, or Version with low compression ratio |
| CTS | Cooling temperature sensor, Kühlmittel-Temperatursensor |
| LMF | Light-alloy rims |
| BLS | Brake light switch |
| AGRF | EGR flow |
| UV | Ultraviolet. Used mostly in conjunction with light or radiation. |
| CAFE | Corporate Average Fuel Economy |
| KAT | Catalytic converter |
| DVD | Digital versatile disc. Storage medium with significantly higher storage capacity than a conventional CD. |
| LSD | Limited-slip differential |
| PLR | Pneumatic idle speed control |
| CS | Crankshaft |
| 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 |
| MC | Microcomputer or Medium compression |
| CDI | Common Rail direct injection (in Mercedes and MCC) |
| 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. |
| DFA | Speed sensor output |
| CAS | Collision Avoidance |
| IWZ | Incremental angle/time sensor, rotation-angle sensor |
| CGI | Stratified charge gasoline injection, petrol direct injection with stratified charge through throttle valve and with compressor charging (Mercedes) |
| JET | Jet, Jetronic: injection system, usually proper name |
| IG | Pulse or increment transmitter, or Ignition |
| TDI | Turbo diesel injection |
| ESC | Escape key on PC or Map ignition or Electronic spark control, electronic ignition control up to knock region, with knock sensor |
| RX | Receive line (contrast with TX line). |
| MI | Miles, physical unit |
| IRF | Interior filter |
| CAA | Clean Air Act (US exhaust-gas regulations) |
| RLV | Reverse-flow valve |
| 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. |
| BECS | Base Emissions Control Strategy |
| KU/GN | Clutch/transmission neutral position |
| QB | Quality assessment |
| HZ | Hertz, physical unit |
| AV | Outlet valve or Shutoff valve |
| KMV | Refrigerant compressor |
| INJ | Injector. Injection jet or valve in Common Rail diesel system |
| DSS | Pressure-jump switch |
| PNABU | Pneumatic adjustment device, vacuum-operated (Bosch KH) |
| SIR | Seat electrical system, right. |
| UD-S | Vacuum adjustment LATE |
| THZ | Tandem master cylinder. Master brake cylinder for hydraulic brakes. |
| TLA | Temperature dependent idle increase, with distributor injection pumps |
| SIM | Safety information module. Component of ISIS system (BMW) |
| CAT | Catalytic converter |
| PNG | Papua New Guinea |
| BT | Brake drum |
| PF1t_swtSrvval_C | Switch to deactivate the particle filter functionality: Switch to reset the EEPROM values (DPF Off) |
| ASV | Air switching valve, air intake valve or Trailer control valve |
| TF | Temperature sensor |
| ELAB | Electrical idle shutoff valve |
| ESL | Electronic steering lock. See also ELV. |
| IMMO | Immobilizer, an electronic anti-theft device in a vehicle that prevents the engine from starting without the correct key |
| ESS | Engine Speed Sensor (SAE J1930) |
| GW | Gateway. PC or computer that connects and controls data exchange between two networks. |
| GSR | Belt tensioner, usually proper name |
| INZ | Central injection |
| RFS | Backup light(s) |
| GDB | Regulated differential brake |
| Q-OVER | Overflow quantity |
| ARF | Exhaust-gas recirculation |
| MIIT | Ministry of Industry and Information Technology |
| GK | Glow plug |
| CNG | Compressed natural gas, fuel for vehicles with gas-powered engines |
| ISIS | Intelligent safety system. System with multiple airbags, pyrotechnically triggered headrests, seat-belt tensioners and intelligent electronics (BMW) |
| NW | Camshaft |
| MES | Mechanically enabled start volume |
| FAS | Driver-assistance system |
| VES | Fully electronic radio ignition key |
| EPROM | Erasable programmable read-only memory, programmable or erasable with UV light, proper name |
| ASMS | Automatic stability management system. See also ESP. |
| CKP | Crankshaft positioning sensor |
| RCH | Chile |
| MLD | Mechanical load-peak damping |
| DFB | Flow limiter (Common Rail) or Dynamic start-of-delivery setting |
| MFS | Multifunction sensor |
| CCM | Really ccm or cm³, cubic centimeters, unit of volume |
| SO | Safety switch, normally closed (actuator) |
| PLA | Pneumatic idle increase or Pneumatic idle stop |
| OUD | OUD: Without vacuum |
| MFA | Measurement window, start or Multifunction display |
| BDE | Petrol direct injection |
| MRS | Multi-restraint system. Temic or BMW system consisting of belt tensioner, belt force limiting, airbags, and safety battery terminal (see SBK). |
| IMA | Integrated engine assistant (special Honda engine control), or Injector quantity analysis |
| NLS | Needle lift sensor (diesel) |
| ROK | Republic of Korea |
| ETKA | Electronic parts catalogue. Component of the VW ELSA service information system. |
| T.C.S. | Ignition timing control system |
| SSS | Stop/start system |
| GRA | Speed control system. Alternative term for cruise control. |
| H | H: hours H: hexadecimal number, or stroke, or Hungary |
| EGROFF | Process to physically close the Exhaust Gas Recirculation engine part alogside with modifying its ECU with the removal of DTC P0400, P0405, P0408 - P0411, P1403 - P1406 and sometimes P0101 on VAG |
| TWC | Three-way catalytic converter |
| AES | Auxiliary Emission Strategy |
| FKTSCH | Function switch |
| DBG | Flow limiter |
| PSV | Partial intake-manifold pre-heating |
| NBF | Needle lift sensor (diesel) |
| FGB/AGB | Speed limiter / automatic speed limiter, usually proper name |
| G/SEC | grams per second, unit |
| KPA | Kilopascal, physical unit |
| DIS | Direct ignition system, proper name |
| 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. |
| SPV | Injection adjustment (see also SV) |
| MV | Millivolt, physical unit |
| VIN | Vehicle identification number, code stored in control unit |
| MVS | Solenoid valve control unit |
| EPC | Electronic power control or Electronic pedal control (such as with ME-Motronic systems without mechanical throttle cable) |
| MCC | Micro Compact Car. DaimlerChrysler subsidiary that manufactures the Smart vehicle. |
| CFI | Cylinder-individual injection system, proper name |
| BAR | Bureau of Automotive Repair (SAE J1930) |
| KSZ | Fuel distributor or distribution |
| GZS | Glow duration control unit |
| OTL | OBD Threshold Limit Same as OBDEL |
| BZ | Brake cylinder |
| MR-DF | Speed sensor with magnetoresistive measurement |
| AWK | Spare piston, used if proper piston does not function |
| CI | Charge Increasing (SAE J1930) |
| LLS | Idle actuator, or Idle switch |
| LT | Model designation for VW Transporter, proper name |
| DM3/H | Dm³/H: cubic decimeters per stroke, unit |
| TS | Temperature switch or Twin spark, double-spark ignition (Alfa Romeo) |
| HO2S | Heated oxygen (O2) sensor |
| NBS | Needle lift sensor (diesel) |
| 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. |
| EDR | Electronic diesel control NFZ-DB |
| EPS | Extended park position, or Injection pump test bench, sometimes used as a product identification (such as EPS 944) |
| ARB | Air Resources Board |
| 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 |
| G/ZYL | grams per cylinder, unit for mass per cylinder |
| UVR | Voltage at valve relay |
| UUV | Urban Utility Vehicle, Nutzfahrzeug für den Einsatz in der Stadt |
| SLM | Shift lever Module |
| ASP | Shutoff valve for ASR brake control |
| O2 | Oxygen |
| INA | Information display for ASR systems |
| UEDS | Excessive-speed switch |
| ATWS | Anti-theft warning system (Opel) |
| T-LASTPUNK | Time of load point |
| EAI | Electronic advanced ignition, electronic ignition-curve control, ELZ |
| DI | Direct (diesel) injection, system name, usually proper name |
| WWH-OBD | World Wide Harmonized On-Board Diagnostics |
| HZR | Heating control. Simple type of air conditioner. |
| TQ | Time quantity (usually TQ signal). Fuel consumption signal. |
| FDI | Fuel direct injection, gasoline direct injection, refer also to GDI |
| TSB | Technical Service Bulletin |
| KF | Fuel filter |
| FAF | Fresh Aik Flow |
| 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. |
| UDS | Accident data memory (VDO), similar to black box in aircraft |
| DDA | Digital directional antenna, special antenna which blocks out radio wave reflection interference |
| HD OBD | Heavy Duty OBD |
| LSH | Oxygen sensor, heated |
| DMS | Elongation measurement sensor |
| CAN | Controller Area Network, mini-network for exchanging data between computers, proper name |
| MBZ | Diaphragm brake cylinder |
| GM | Basic module, or Gear motor, or General Motors, proper name (name of vehicle manufacturer) |
| EGO | Exhaust Gas Oxygen Sensor, unbeheizte Lambdasonde |
| SAS | Side-impact protection |
| ASF | Audi Space Frame, special construction for aluminium frame in Audi A2 and A8 |
| HBA | Hydraulic brake assistant or Hydraulically operated equalisation or Auxiliary brake system |
| 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) |
| POTI | Potentiometer, variable resistance |
| AIV | Air injection valve |
| KSS | Cold-start control |
| CMH | Mixture preheating |
| OOP | Out-of-position detection |
| SDW | Signal from anti-theft warning system |
| EEC IV | Electronic engine control system IV (Ford), system name, proper name |
| OOR | Out of Range |
| U-BATT | Battery voltage |
| PN | Particulate Number |
| PD | Pump-nozzle |
| ELZ | Electronic ignition |
| TNA | Signal output for engine speed |
| UQS | Urea Quality Sensor |
| SUS | Slip threshold switchover |
| GPS | Global Positioning System, satellite system for locating a vehicle |
| MAEL | Earth (ground) electrode (spark plug) |
| ESSD | Electrical steel sunroof |
| SPOR | Sporadic |
| CO2 | Carbon dioxide, non-poisonous gas produced during combustion, also known as greenhouse gas |
| MEN | Monitor engine (output line for engine diagnostic data) |
| UEGO | Universal exhaust gas oxygen sensor, non-heated Lambda sensor |
| RS | Restraint system or Rotational speed sensor |
| 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. |
| FBA | Parking-brake system (usually hand brake) |
| GSS | Transmission shift lock or Seatbelt buckle switch |
| VVL | Variable valve lift |
| LNT | Lean NOx Trap |
| WTF | Water temperature sensor |
| IHR | Heating control, usually proper name |
| EAK | Kenya |
| D3 | German exhaust-gas standard, parallel to European standard. Corresponds largely to EU3. See EU3 and EURO3. |
| UM | Reversing valve (for ASR operation) |
| DI | Distributor Ignition (SAE J1930) |
| LHA | Air-side automatic heater |
| DME | Digital Motor Electronics (Motronic), system name, proper name |
| FSK | Frequency shift keying |
| RDE | Real Driving Emissions |
| T-ABGLEICH | T-adjust: time of adjustment |
| ECI | Electronically Controlled Injection, system name, usually proper name |
| AND | Logical AND operator |
| NTC1 | Intake air temperature (in °C) |
| HZ | Master brake cylinder |
| RO | Romania |
| ENR | Electronic level control |
| DSU | Pressure sensor for ambient pressure |
| HF | High frequency |
| TRACS | Traction control system (Volvo) |
| CH4 | Methane, main component of natural gas (90 percent), compressed as fuel for natural-gas-powered cars. See also CNG |
| ECD | Electronically controlled deceleration |
| DLWR | Dynamic headlight vertical aim control |
| DBV | Pressure limiting valve |
| ASM | Asynchronous machine |
| GID | Graphic information display (Opel) |
| MIU | Main Instrument Unit |
| KWS | Comfort immobilizer |
| VC | Variant coding |
| KVRS | Evaporative emission-control regeneration system, also referred to as tank ventilation system |
| B.C.D.D. | Vacuum controlled idle air correction |
| KG/H | Kilograms per hour, unit |
| RL | Right-hand drive |
| RTI | Radio Traffic Information, Verkehrfunk |
| LED | Light-emitting diode, usually proper name |
| 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) |
| RFI | Radio Frequency Interference |
| MAP | Manifold absolute pressure or Intake manifold pressure sensor located at the throttle body or intake manifold |
| EPB | Environmental Protection Bureau (SAE J1930) |
| GVWR | Gross Vehicle Weight Rating |
| CR | Common Rail. See CRS. |
| TX | TX line: Transmission line, in contrast to RX line |
| EVA | Electrical full-load stop or Emergency valve assistance, safety valve |
| CCR | California Code of Regulations |
| PDTC | Permanent DTC |
| STC | Stability and traction control |
| T-WARTE | Wait time |
| ETS | Electronic thermostat control, usually proper name or Electronic traction system, see ETC |
| HWFET | Highway Fuel Economy Test |
| ELD | Electrical load-peak damping |
| B- | Battery negative voltage |
| MFI-I | Intermittent multipoint fuel injection (electronic) |
| FM | Vehicle management |
| PWG | Pedal position sensor, usually proper name |
| MZ | Magneto ignition |
| VD | Choke valve |
| BWN | Bosch Workshop Network, proper name |
| SIR | Service Information Rule (SAE J1930) |
| RLFS | Fuel supply system without reverse flow |
| LDT | Light Duty Truck |
| FC | Fault (error) code |
| ST | System tester |
| MZV | Microprocessor-controlled ignition adjustment |
| MLB | Air Mass Sensor (Luftmassenmesser) |
| FZG | Vehicle |
| KVR | Fuel distributor tube |
| MOT/DME | Digital Motor Electronics (Motronic) |
| BEVx | Battery Electric Vehicle with Range Extender |
| K | K: small K: channel K-line: bidirectional line between control unit and tester |
| TPS | Throttle position sensor |
| FF | Freeze Frame |
| VIS | Variable Intake System (Rover) |
| BFS | Passenger side |
| GER | Germany |
| ER | Energy reserve |
| DDM | Drivers Door Module |
| M-HEAT | Mirror Heating, Spiegelheizung (Opel) |
| FMN | Delivery volume normal |
| BEG | Begrenzungsmenge, Begrenzung - Limiting amount, limit |
| TAC | Test Air Conditioning. Excitation lead for air conditioner (Mazda) |
| CBC | Cornering brake control |
| LDV | Light Duty Vehicle |
| KTF | Fuel temperature sensor, or Coolant temperature sensor |
| KG | Kilogram, physical unit, or Keyless Go (access to vehicle and engine start without key) |
| W/M2 | W/m². Watts per square meter. Physical unit for solar radiation intensity |
| STO | Self-test output signal |
| ATG | Replacement transmission |
| BBV | Service-brake valve. Component of service brake system. See also BBA. |
| TEMP | Temperature |
| UW | Voltage converter |
| SAM | Safety (or signal detection) and triggering module. Designation for Mercedes control unit. |
| GEN | Generator |
| WHSC | World Harmonized Stationary Cycle |
| GSK | Sheathed element glow plug |
| HH | HH division, 4/4 division of brake circuit: circuits 1 and 2 brake all wheels. |
| ESC | European Stationary Cycle (SAE J1930) |
| TCM | Transmission control module (Opel automatic-transmission control unit) |
| SBS | Speech-based operation system (Porsche designation) |
| IQ | Injection Quantity as requested by the accelerator position |
| NBE | Proximity detector |
| PFA | Particle filter system |
| MS | Engine control or Diesel systems with electronic volume- and start-of-injection control |
| STI | Self-test input signal |
| G | G: Acceleration of gravity, or gram, physical unit |
| AMOX | Ammonia Oxidation |
| STAE | Start external, external start switch |
| LSF | Oxygen sensor, planar (flat sensor) |
| OICA | Organisation Internationalles Constructeurs des Automobiles |
| VE | Distributor injection pump (series designation). See also VP |
| FZK | Vane compressor |
| MG | Manual transmission |
| HDS | Urea metering system, used with diesel vehicles to prevent or reduce soot emissions |
| AS | Air intake or Towing protection or South America |
| SID | System Information Display |
| PM | Pump motor |
| ROM | Read-only memory. Program memory of processor, or other memory, that can only be read. |
| BZM | Reference mark |
| MIEL | Middle electrode (spark plug) |
| 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. |
| LAM | Idle emissions measurement |
| LHD | Left-hand drive |
| DSG | RPM target value sensor |
| AZG | Adaptive cylinder equalisation. Quantity equalisation control. |
| MODIC | Mobile diagnosis computer (BMW diagnostic tester), fasten seatbelt and put in to diag mode with 3 presses of the start button |
| PES-SW | Polyellipsoid headlight(s) |
| UCL | Understeering control logic. ESP system used in Renault Megane. |
| GHG | Green House Gas |
| ALC | Adaptive light control. The headlight illumination is distributed variably according to the driving situation (city, country, motorway) (BMW) |
| EAG | Electronic automatic transmission |
| CNCA | Certification and Accreditation Administration |
| VVT | Variable Valve Timing |
| UEC | Underhood Electrical Center, Opel designation for engine-compartment electronics module |
| ELF | Electronic air cushioning |
| ESS | Energy Storage System (SAE J1930) |
| GWK | Transmission converter clutch |
| LSM | Oxygen sensor for lean operation |
| L | L: liter, physical unit, or left L: left L-line: unidirectional line between control unit and tester |
| DLK | Dynamic steering correction |
| E2 | Software adapted for Euro 2 emission standard, see also CAToff, LAMBDAoff, EGRoff, DPFoff |
| IZV | Infrared central locking |
| OHC | Overhead camshaft. Camshaft situated above the cylinder head. Often used in engine designations. |
| IRS | Interior protection |
| FES | Spark energy control |
| ELS | Electronic idle stabilisation |
| TC | Traction control, auxiliary function with ABS |
| PA | Pa: pascal, physical unit of pressure. See also HPA, KPA, and MPA |
| LP | Perforated plate |
| LRA | Oxygen sensor control with adaptive pilot control |
| SLP | Secondary-air pump |
| CRC | Cyclic redundancy check. Method for generating a checksum, proper name |
| WPA | Worst Performing Acceptable |
| SIH | Sitzheizung |
| EMV | Electromagnetic compatibility (EMC) |
| NL | Netherlands |
| UZ | Voltage after ignition, terminal 15 |
| T-MESS | Time or duration of measurement |
| NKW-ABS | Anti-blocking system for lorries (trucks) with air brakes |
| EBV | EGR Bypass Valve (SAE J1930) |
| SI | Speed index (code letter for speed), or Silicon |
| ML | Motronic with flap air-volume sensor, usually proper name |
| SM | Seat memory, or Stepping motor |
| DLOC | Device location, Einbaulage einer Komponente |
| DFVL | Speed sensor, left front |
| LTR | Liter, physical unit, often also ltr, L |
| XE | Extreme economy. Selection option for extremely economical driving with automatic transmissions |
| VARILIS | Variable lighting system (Hella) |
| SPI | Single point injection, usually proper name |
| ATF | Exhaust-gas temperature sensor or Automatic transmission fluid |
| VTV | Vacuum transmitting valve |
| A2L | WinOLS file containing definition for Map and Axis Data |
| CMVR | Central Motor Vehicle Rules – automotive industry regulations in India |
| LFR | Idle compensation |
| FHM | Power window motor |
| F/P | Fuel pump |
| CFG | Configuration |
| HHT | Hand-held tester (such as KTS500 or PMS100) |
| VGWX | Preset value if sensor fails |
| WALA | Safety lamp |
| EBC | Electronic brake force control (see EBD and EBV) |
| SHZ | Heated seat |
| CCM | Comprehensive Component Monitoring (SAE J1930) |
| DIGI | Digiplex (Marelli) |
| SCAQMD | South Coast Air Quality Management District – California |
| SAV | Overrun cutoff valve, or Sport activity vehicles (for example BMW X5) |
| TCO | Tachograph (Mercedes) |
| RFP | Return pump |
| CEGR | Cooled Exhaust Gas Recirculation |
| UAM | Ultrasonic Alarm Module |
| SCHR | Steps, such as with a stepping motor |
| SME | Stepping-motor electronics |
| VGT | Variable Geometry Turbo |
| IDI | Indirect (diesel) injection |
| CCV | Closed Crankcase Ventilation |
| SDL | Service diagnosis line, product designation for test line (Bosch) |
| EI-ACED | Emission Increasing Auxiliary Emission Control Device |
| TR | RPM information, or contact roller, or Turkey |
| PSI | Pounds per square inch, physical unit |
| RTM | Smoke opacity measurement module, product name for exhaust-gas tester (Bosch) |
| SP | Safety testing, usually in conjunction with testing of brake system |
| MEP | Mean effective pressure |
| EKRG | Simple short-circuit ring sensor |
| FMEA | Failure Mode and Effects Analysis |
| SPA | Sonic Park Assist |
| TA | Traffic announcement, or Thorax airbag (BMW) |
| DEF | Diesel Exhaust Fluid |
| ASC+T | Automatic stability control, regulated force transmission with traction control |
| KOM | Commercial bus and rental vehicles |
| NOX | NOx: Nitrogen oxides |
| I/M | Inspection and Maintenance |
| ICE | Ignition control electronics, electronic ignition system |
| KIW | Combined instruments with service-interval indicator. See also SIA. |
| HDF | Remote boot-lid release |
| ASG | Attachment control unit or Semi-automatic transmission |
| PWL | Power window lifter |
| T-HYBRID | Hybrid temperature |
| WSM | Wiper motor |
| FWD | Front Wheel DriveGDI |
| ALR | Automatic longitudinal control |
| RSL | Red Stop Lamp |
| PAS | Peripheral airbag sensor (side airbag) |
| 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. |
| EONV | Engine Off Natural Vacuum |
| PVE | Production Vehicle Evaluation |
| VDA | German Automobile Manufacturers Association (Verband der deutschen Automobilindustrie) |
| KRF | Kraftstoffrückführventil (Diesel) |
| EML | Electronic engine performance control, proper name |
| ASM | Alarm Siren Module |
| ASIC | Application Specific Integrated Circuit |
| SRC | Source (of data or audio signals, for example) |
| PAG | Polyethylene glycol oil, low-temperature oil |
| M | Motronic, usually proper name, or Mechanical or Mechanical fan or Centre m: Centre or Manual |
| IDS | Interactive dynamic driving system |
| TSU | Speedometer signal transformer |
| M/T | Manual Transmission |
| CCFA | French Automobile Manufacturers Association (Comité des Constructeurs Français d’Automobiles) |
| HD | Heating wire or Lifting roof |
| TAS | Temperature dependent control, with distributor injection pumps, or Temperature dependent start-volume, with distributor injection pumps |
| EBS | Electronic braking system |
| TRUST | Trundle stability |
| SRM | Headlight wiper motor |
| NVH | Noise Vibration and Harshness |
| TEMP. SCH. | Temperature switch |
| VL | Left front, or Full load, engine operating state |
| SCS | Stability control system. Simplified form of ESP (Mitsubishi). Prevents vehicle tilting or skidding. |
| T | Such as t-adj., time of adjustment |
| KE | Continuous injection, usually proper name |
| VMT | Vehicle Miles Traveled |
| WLR | Warmup control |
| DeSOX | Sulfur Oxide Reduction/Regeneration |
| SAT | Siemens adaptive transmission control |
| SW | Headlight(s) or Software |
| DDM | Engine speed versus alternator residual ripple or driver door module (Opel) |
| SEA | Selective Enforcement Audit |
| RGS | Route guidance standalone (Travel Pilot as standalone system) |
| MF | Measurement window |
| IWG | Inductive travel sensor |
| LOS | Emergency program (EEC IV) |
| EMI | Injection volume indicator |
| BPA | Start of paraffin precipitation. Also called cloud point. Temperature at which paraffin crystals precipitate out of diesel fuel. |
| MVN | Level valve with electronic air-cushioning system |
| DIN | German Industrial Standard |
| FT | Fuel Trim |
| MEA | Middle East |
| ICM | Infotainment Module |
| CPX | High-pressure pump of a Common Rail diesel system, such as CP2. It is used in commercial vehicles. |
| OPC | Opel Performance Centre. Centre for automotive sports (Opel). |
| CELIS | Central lighting system (Hella) |
| EKE | Electronic fuel injection, proper name |
| VERD. | Verdeck (Cabrio) |
| ACC | Adaptive Cruise Control |
| VZ-K | Electronic ignition timing with static distribution and knock control |
| AGRE | EGR control output stage (Endstufe) |
| KX | Jetronic, continuous, with oxygen sensor control, usually proper name |
| PHS | Park heater system |
| SET | Supplemental Emission Test |
| GND | Ground |
| MPV | Multi-purpose vehicles (Mazda). Comprises the group of vans and small panel trucks. |
| RDU | Tyre pressure monitoring |
| EGAS | Electronic accelerator pedal, proper name (electronic throttle control, ETC) |
| ELWIS | Electronic shop information system. Component of the VW ELSA service information system. |
| PF1t_swtActvSubs_C | Switch for particle filter software activation EEPROM replacement value (DPF Off) |
| IFS | Inertia fuel shutoff. Safety fuel shutoff, or Independent front-wheel suspension |
| CSERS | Cold Start Emission Reduction Strategy |
| MEG | Motronic with ETC and transmission control |
| PHEV | Plug-in Hybrid Electric Vehicle |
| MECH. | Mechanical |
| TSS | Thermal protection switch |
| MG/ZYK | Milligrams per cycle, unit |
| SO2 | Sulphur dioxide. Pungent gas causing respiratory diseases. It is thus an aim to reduce the sulphur content in exhaust gases. |
| MLA | Multiple link antitheft system (system-wide theft protection) |
| GSG | Speed sensor |
| VSC | Voltage supply control. Battery management system (Mercedes) |
| FAC | Failcode Air Conditioning. Output line for error codes for air conditioner (Mazda) |
| CID | Colour Info Display |
| FIS | Vehicle information system. Product designation (such as FIS 215) |
| NMOG | Non-Methane Organic Gases |
| DSE | Thermal-expansion material element, expands or contracts when heated |
| EGD | Electronically regulated shock absorption |
| SSU | Triggering device for side airbag |
| US | Designation denoting basis on U.S. emission standards |
| KWT | Kuwait |
| EOL | End of line, usually in conjunction with end-of-line programming |
| MI | Malfunction Indicator – European reference for MIL (SAE J1930) |
| B | Internal combustion engine (petrol) or Bank or Belgium |
| MY | Model year |
| EFI | Electronic fuel injection, usually proper name |
| WAA | Wiper blade |
| KAM | Keep-alive memory |
| DECT | Digital enhanced cordless telecommunications, standard for data transmission, usually proper name |
| MMM | Multipath map matching (navigation system) |
| NTC2 | Engine water temperature (in °C) |
| AU | Exhaust-gas inspection |
| TCU | Transmission control unit |
| UP | Unsaturated polyester. Thermosetting plastic used in body construction or to manufacture pressure-resistant containers. |
| ASR | Transmission slip control, usually proper name |
| EKS | Electronic clutch system. Clutch engagement and disengagement is automatic. The clutch pedal is no longer needed. See also AKS. |
| 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 |
| DWS | Rotation angle sensor |
| WS | Wiper or Travel sensor |
| ISC | Idle speed control or Idle compensation |
| GHD | Housing cover |
| KVD | Fuel evaporation |
| TCE | Trailer central electronic, central electronics system for trailer |
| KOMP | Component |
| CATOFF | A process to physically delete catalytic converter and second Lambda alongside with proper removal of DTC P0420, P0136 - P0141, P1133, P2097 and sometimes P0130 for first Lambda |
| PA | Parking assistant |
| RG | Route guidance (Travel Pilot) |
| DDS | Diesel theft protection |
| ASC | Automatic stability control, controlled force transmission |
| KWH | Kilowatt-hours, physical unit |
| LER | Idle limit-speed control |
| WIF | Water In Fuel |
| I | Italy |
| TZEV | Transitional Zero Emission Vehicle |
| USO | Pumpenkennfeld - pump voltage (duration) |
| LTF | Air-temperature sensor |
| SRA | Headlight wiper system |
| EZE | Electronic central control unit, usually proper name |
| HLM | Hot-wire air-mass sensor |
| WHTC | World Harmonized Transient Cycle |
| DG | Speed sensor, or Speed sensor for transmission input speed |
| MG/H | Milligrams per stroke, unit |
| TBS | Test Brake System. Excitation lead for ABS system (Mazda) |
| TVA | Temperature dependent full-load stop |
| DCU | Diesel control unit or Dosing control unit. Unit for injection of urea (serves to reduce NOx). |
| ISDN | Integrated Services Digital Network: digital telephone and data network with integrated services |
| TPMS | Tyre pressure monitoring system, with pressure and temperature sensors at wheel (Opel/Teves) |
| VSS | Vehicle Speed Sensor (SAE J1930) |
| NDS | Neutral drive switch, activated when automatic transmission selector lever is in neutral position |
| SD | Intake manifold pressure, or Sunroof, or Injection duration, or Control unit diagnosis |
| IRM | Individual control, modified, with commercial-vehicle ABS systems |
| WSH | Wiper lever |
| AW | Drive shaft |
| QS | Quality assurance |
| TL | Partial throttle, engine operating state or Toruqe Limiter |
| AWL | Amber Warning Lamp |
| SV | Injection adjustment (see also SPV) or Servo valve or Start valve |
| ISS | Joint venture (Bosch, Michelin) for developing integrated vehicle dynamics systems |
| GATES | Global automotive telematic standard |
| OBD | On-board diagnostics or off-board diagnostics, vehicle-internal diagnosis with internal or external test unit, usually proper name |
| LLR | Idle control (diesel systems) |
| RC | Remote control, or China (Taiwan) |
| EPB | Electropneumatic brake |
| FH | Power window |
| KVS | Fuel distributor piece |
| DSM | Drivers Seat Module |
| TIPTRONIC | Porsche or VW electronic transmission control. The control can be operated via a small device on the steering wheel. |
| MS | Millisecond, physical unit |
| ALWR | Automatic headlight vertical aim control |
| GDL | Gas pressure lamp (Audi) |
| DKI | Throttle valve actual value. Current throttle-valve voltage |
| COP | Conformity of Production |
| FUL | Full UsefunLife – also referred to as EUL (End of UsefunLife) |
| RAM | Random access memory, read/write memory of a processor |
| 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.) |
| FAT | Failcode Automatic Transmission. Output line for error codes for transmission control (Mazda) |
| FSS | Delivery signal sensor, or Flexible service system |
| NVF | Navigation and traffic control |
| 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 |
| P | Pressure, or Power train (used with OBD error codes, for example), or Portugal |
| MVEG | Motor vehicle emission group, exhaust-gas classification for passenger cars |
| PBM | Pulse width modulated, signal processing method (prior to sending), usually proper name |
| EWL | External warning lamp |
| MUX | Multiplexer or multiplex signal |
| PPG | PPG module: Periphery program module; module containing control unit diagnostic programs or other CompacSoft programs, proper name. |
| CFR | Code of Federal Regulations – US |
| CQC | China Quality Certification Center (Part of CNCA China) |
| OHV | Overhead valves (the camshaft is therefore underneath) |
| SCC | Safety car concept. Volvo concept for vehicle in which many safety features have been integrated |
| FSA | Vehicle system analysis, product name for engine tester (Bosch) |
| 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) |
| CARB | California Air Resources Board (US air-pollution authority), proper name |
| ICM | Ignition control module, or Integrated chassis management, BMW vehicle-dynamics control with trend-setting technology |
| HAI | Hot-air inlet |
| DLI | Distributorless ignition |
| DOR | Direct Ozone Reduction |
| VKS | Variant coding with plug |
| TCMV | Technical Committee Motor Vehicles (EU) |
| NEFZ | New European driving cycle (procedure for fuel consumption measurement). See also NEDC |
| TDS | Tank pressure sensor |
| LIM | Sedan |
| PDE | Pump-nozzle unit (new designation is UIS) |
| TDC | Top dead centre, see also OT |
| SLS | Secondary-air system |
| HA | Hydraulic stop or Rear axle or Hydraulic modulator for ABS |
| CSCV | RPM control valve |
| USG | Non-interrupting manual transmission. Two clutches (drive-off and load-shift) enable electronically controlled driving without shifting interruptions. |
| 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 |
| IHKA | Integrated heating and air conditioning system (BMW) |
| RSC | Run-flat system component. Tyres with emergency-running properties. See also RFT. |
| NKW | Lorry (truck) |
| MDPV | Medium Duty Passenger Vehicle |
| SKO | Compressor signal |
| IPBEC | Instrument Panel Body Electrical Centre |
| MST | Measurement and control unit |
| INFOANZ | Information display for ASR systems |
| LLRA | Idle control with adaptive pilot control |
| TES | Thermo-electric switch or tank ventilation system (also referred to as evaporative emission-control regeneration system) |
| CO | Carbon monoxide. Poisonous gas present in exhaust gas. Produced during combustion of carbon with insufficient oxygen, or Colombia |
| ICC | Intelligent cruise control, Nissan distance control system; see also ACC. |
| PSE | Pneumatic system electronics, electronically controlled pneumatic system |
| EHAB | Electrohydraulic shutoff |
| PHI | Phi: Greek letter used to designate angles. |
| VA | Vorderachse |
| DHK | Nozzle holder combination |
| AWN | ASA Workshop Network, proper name |
| BF-AB | Passenger airbag |
| MED | Motronic with ETC and petrol direct injection |
| DK | Throttle valve or Denmark |
| OMM | Surface micromechanics |
| EA | Original equipment |
| TMF | Door module, driver side |
| KE-MOTRONI | Continuous electronic injection system, usually proper name |
| FGB/GBA | Speed limiter / speed limiting system, usually proper name |
| EUV | Electro-reversing valve |
| AUT | Automatic transmission |
| BSA | Brake system analysis, product name for brake test stand (Bosch) |
| AKF | Activated charcoal filter |
| PT | Power train |
| MAF | Mass airflow sensor, usually is located inline with the intake system, just after the air filter. |
| K-CAN | Body CAN bus. Low-speed CAN bus for comfort-system and body electronics. See also PT-CAN and SI-BUS. |
| CVTSC | China Vehicle Technology Service Center (Part of MIIT China) |
| RUEF | Retrofit vehicle |
| ATB | Exhaust-gas temperature limitation |
| SHR | Select-high control for commercial-vehicle ABS systems. The pressure level is geared to the wheel running with the higher coefficient of friction. |
| JW | Company car(s) |
| INT | Integrator |
| XS | Extreme sport. Selection option for extremely sporty driving with automatic transmissions |
| EDS | Electronic differential lock, usually proper name |
| AGRV | Exhaust-gas recirculation valve |
| LLDRAN | Idle speed increase |
| AAT | Ambient Air Temperature |
| CAL | California |
| EWS | Electronic immobilizer |
| CV | Check valve, shutoff valve, throttling non-return valve |
| CCC | Close Coupled Catalyst |
| BS | Brake disc or Acceleration sensor |
| ETI | Equipment and Tool Institute |
| OC | Oxidation catalytic converter |
| MI | Malfunction indicator or Main injection (see also HE) |
| 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) |
| ENG | Engine type (code letters), or Engine |
| VP | Distributor pump (usually factory-internal designation). See also VE |
| EZF-H | Electronic ignition system with map, trigger by Hall sensor |
| KEN | Jetronic, continuous, with electronic extended-function unit, n=version, usually proper name |
| EACM | Exhaust Aftertreatment Control Module |
| MUD | With vacuum |
| TAT | Test Automatic Transmission. Excitation lead for transmission control (Mazda) |
| LSU | Wideband oxygen sensor, planar type |
| OEF | Location of missing vehicles (via GPS) |
| PLU | Pierburg measurement cell, or Pierburg Aviation |
| ALV | Axle load distribution (drive-off aid) |
| HCHO | Formaldehyde |
| DSTC | Dynamic stability and traction control |
| RDS | Rail pressure sensor or Radio data system |
| EURO4 | European exhaust-gas standard, valid from 2005 (levels: HC 0.1, CO 1.0, NOx 0.08) |
| FWI | Vehicle-travel pulse number |
| 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. |
| AOS | Automatic Ocupant Sensing |
| LSZ | Light-switching centre |
| CALID | Calibration Identification number |
| PF1t_swtActv_C | Switch to deactivate the particle filter functionality: Switch to reset the EEPROM values (DPF Off) |
| UBL | Brake-light voltage |
| VSA | Vehicle stability assist. System similar to ESP. |
| BFL | Brake fluid level |
| SPN | Suspect Parameter Number |
| EWMA | Exponential weighted moving average, misfire detection during last 10 driving cycles |
| DRS | Rotation rate sensor, sensor for vehicle dynamics control |
| FA | Front axle |
| VRD | Vario nozzle, nozzle with variable radius |
| KW | Kilowatt, physical unit |
| OFFSET-V | Voltage offset |
| CB | Vacuum control of starting mixture |
| EOI | End Of Injection, diesel engines gain power until 25 EOI |
| KMMG | Continuous volume meter, closed |
| PSPS | Power steering pressure switch |
| HFM | Hot-film air-mass sensor or Special engine control in which load detection takes place via a hot-film air-mass sensor |
| PSP | Power steering pressure |
| AY | Lateral acceleration. A=acceleration, Y=lateral direction |
| FFR | Vehicle master computer. Diagnostic gateway in vehicle, installed in combined instruments or central electrical system. Also contains the immobilizer. |
| AHS | Alcohol sensor |
| DFHL | Speed sensor, left rear |
| AKSE | Automatic child-seat detection |
| T-TOTAL | Total measurement time |
| EFP | Electronic accelerator pedal, proper name |
| EOP | Engine Oil Pressure |
| AGR | Exhaust-gas recirculation |
| FICD | Fast-idle control device |
| ALDL | Assembly Line Diagnostic Link, Opel diagnostic plug |
| DM | Diagnosis module (SAE J1930) |
| FS | Driving-mode switch or Driver side |
| PDTC | Permanent Diagnostic Trouble Code |
| OSRVM | Outside rear-view mirror (Opel) |
| DBR | Retarder (sustained action brake) or Retarder relay |
| TN | Signal from ignition with inductive peaks suppressed. Used for RPM detection for control unit and speedometer |
| LDR | Boost-pressure control, or Idle speed control |
| HU | Major inspection |
| SNR | Part number or Record number |
| EU4 | European exhaust-gas standard, valid from 2005 (levels: HC 0.1, CO 1.0, NOx 0.08) |
| ECABS | Electronic air cushioning, combined with ABS |
| APB | Active parking brake. Teves system containing interface to electronics, with driver-assistance functions such as drive-off assistance, parking aid, and immobilizer. |
| PB | Pb: chemical symbol for lead (Latin: plumbum) |
| C | Capacitor, capacitance, or Chassis (OBD error codes, for example) or Cuba |
| LTFT | Long-term fuel trim (to counteract aging symptoms). See also LFT. |
| PSD | Pump control with diagnosis or Porsche limited-slip differential, usually proper name |
| MPFI | Multi-point fuel injection, electronic, usually proper name |
| LMS | Air-mass sensor |
| ARMIN | Trigger unit for restraint systems with integrated emergency-call control |
| DTI | Diesel direct-injection with distributor pump (Opel) |
| BEPB | Beijing Environmental Protection Bureau |
| RU | Soot concentration in exhaust |
| J | Japan |
| LE2-JET | Petrol injection, LE-Jetronic, 2nd generation, usually proper name |
| 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. |
| VVC | Variable valve control |
| ESR | Electronic slip reduction, another name for ASR, or Electrical sunroof, electrically operated sunroof (or lifting roof) |
| TVS | Temperature dependent vacuum switch or Thermal vacuum switch |
| EDIS 4 | EEC IV with distributorless ignition system (Ford) |
| EOT | Engine Oil Temperature |
| ECON | Electronic carburetor, n=version, usually proper name |
| EZL | Electronic ignition system with characteristic curves |
| CTX | Continuously variable transaxle |
| RPM | Revolutions per minute |
| VT | Vacuum transducer |
| RDV | Reverse-flow throttle valve |
| AMR | Drive torque control |
| GUS | Belt tensioner or Commonwealth of Independent States (CIS) |
| EWD | Single-coil actuator, servomotor with one winding |
| LRS | Load response start, alternative multifunction control |
| SVRL | Single value RPM limiter |
| SLO | Slovenia |
| WHA | Water-side automatic heater |
| ESA | Emissions system analysis, product name for exhaust-gas tester (Bosch) or Electronic spark advance |
| DF | RPM sensor, or Pressure sensor, or Direct-fire, distributorless coil ignition with double ignition coil |
| PDC | Park distance control. Parking aid, often proper name, or Pre-drive check (testing of EHB systems) |
| NVRAM | Non-Volatile Random Access Memory |
| IUPR | In-Use Performance Ratio (European reference) |
| EP | Adjustment point |
| LTG | Line |
| EVE | Electronic distributor injection system (special engine control) |
| ISO-EGO | Isolated Exhaust Gas Oxygen Sensor, isolierte unbeheizte Lambdasonde (mit Massekabel) |
| PCM | Power train control module or Porsche Communication Management, central multimedia control unit for various functions |
| VAF | Air-flow sensor |
| ISU | Intelligent switching unit (Siemens) |
| TKRAFT | Fuel temperature (in °C) |
| K-RWG | Short-circuit ring sensor |
| PMS | Engine control with load detection via intake-manifold pressure (Mercedes) or Inlet-channel injection |
| PPS | Pedal position system, or Pedal position sensor |
| EFS | Single-spark coil, supplying one cylinder |
| DDE | Digital Diesel Electronics, system name, usually proper name, or Direct data exchange |
| SL | Select low |
| FTCO | Flat tachograph (new, flat design), Mercedes |
| B+ | Battery positive voltage |
| LN | Jetronic with air-flow sensor, intermittent, n=version, usually proper name |
| ECE | Economic Commission of Europe, proper name |
| VLP | Preliminary charge pump |
| 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) |
| LTCC | Low temperature cofired ceramic, multilayer ceramic technology |
| PWR | Pulse rectifier |
| TC | Turbocharger (SAE J1930) |
| CPU | Central processing unit (microprocessor) |
| GSM | Global system for mobile communication |
| LAV | Luxury activity vehicles (vehicle classification, such as Lexus RX 300) |
| NCAP | New Car Assessment Program, better known as EURO-NCAP, association for conducting more demanding crash tests (with participation of vehicle manufacturers) |
| VSG | Composite safety glass |
| MID | Multifunction information display |
| TL | Engine load signal recorded over time |
| GSY | Speed symbol. Specification on tyres for allowable speed, alphabetic. See also Speed Index |
| REA | Resonance detection |
| SELECT LOW | Select-low control with commercial-vehicle ABS systems. Pressure level depends on wheel running with the lower coefficient of friction |
| DFC | Deceleration fuel control |
| GA | Basic adaptation or Guarantee |
| VCV | Vacuum control valve |
| AUS | Australia |
| SVG | Seat adjustment transmission |
| DTC | Diagnostic trouble code |
| KB | Wire harness |
| HKD | High-voltage trigger diode, special diode installed in ignition coils |
| ATL | Exhaust-gas turbocharger |
| LPG | Liquefied petroleum gas, fuel for vehicles with gas-powered engines |
| EBCV | Electrical auxiliary air control valve |
| DKG | Throttle valve sensor, detects current position of throttle |
| DIGIPLEX | Fully electronic ignition system, system name, proper name |
| WAN | Nigeria |
| DZ | Breakthrough ignition or Algeria |
| CIN | Calibration identification number. Part of OBD, consists of 3 letters and at most 12 digits. Can indicate hardware level, for example. |
| ROV | Rotating high-voltage distribution |
| L-JETRONIC | Electronically controlled injection system (with direct air-mass measurement), usually proper name |
| ASR 2 | Transmission slip control, separate, system name, proper name |
| VZ | Electronic ignition timing with static distribution |
| 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. |
| CPV | Constant pressure valve |
| UPA | Ultrasonic parking assistant |
| MFI-C | Continuous multipoint fuel injection (electronic) |
| STB | Short To Battery |
| ISO-HEGO | Isolated Heated Exhaust Gas Oxygen Sensor, isolierte beheizte Lambdasonde (mit Massekabel) |
| RUE | Soot emission |
| BMR | Braking torque control |
| KGE | Crankcase ventilation |
| V/MS | V/ms: volts per millisecond, unit for voltage per time. |
| NE | After-injection Ne-Signal: Engine RPM signal, 24 AC signals sent to control unit per distributor rotation |
| KSB | Cold-start accelerator, with distributor injection pumps |
| HAS | Hand brake switch |
| MA | Milliampere, physical unit |
| VPC | Volvo Personal Communicator. SCC element with fingerprint sensor that detects the identity of the driver and makes driver-specific adjustments. |
| LI | Left, or Load index, number indicating tyre load capacity |
| 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 |
| STM | Servomotor |
| EHPS | Electrohydraulic power steering |
| ULSD | Ultra Low Sulfur Diesel |
| FFV | Flexible Fuel Vehicle |
| SWA | Headlight washer |
| HDOH | Heavy Duty On-Highway |
| ELRA | Electronic automatic restraint. Automatic seat belts (VW) |
| GTR | Global Technical Regulations – United Nations regulations |
| FSR | Driving stability control |
| VIM | Vehicle immobilizer |
| BBUS | Body Bus |
| ALG | Axle load sensor |
| RP | In-line pump, or Philippines |
| MA | Mono-Motronic, petrol injection system, usually proper name |
| SOHC | Single overhead camshaft |
| ALFB | Atmospheric pressure and load-dependent start-of-delivery |
| LR | Oxygen sensor control |
| TAU | Automatic temperature system |
| LRR | Smooth-running control, or Long-range radar (component of ACC system with detection range up to 120 m) |
| LWL | Optical fiber |
| FEN | Failcode Engine. Output line for error codes for engine control unit (Mazda) |
| ZDR | Intermediate RPM control |
| SILA | Signal lamp |
| TEN | Test Engine. Excitation lead for control unit (Mazda), usually proper name |
| GB | Yawing moment restriction or Great Britain |
| PNP | Park/Neutral Position |
| BPS | Brake test stand |
| KVRV | Fuel evaporation regeneration valve, tank ventilation valve |
| DVH | Pressure valve holder |
| MP | Motronic with intake manifold sensor, usually proper name |
| DRM | Pressure regulator module |
| KL | Terminal |
| GS | Independent electronic transmission control, usually proper name, or Belt tensioner |
| DPFE | Delta pressure feedback electronic system or Differential pressure feedback, EGR |
| 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. |
| VAT | Intake-air temperature sensor |
| PJ | Pilot-Jection |
| ELR | Electrical ignition system with ignition curve adjustment or Electronic idle control |
| ZEV | Zero Emission Vehicle |
| VAKU-SCH. | Vacuum switch |
| ORVR | On Board Refueling Vapor Recovery |
| ASD | Automatic limited-slip differential, usually proper name |
| PI | Pilot injection. See also POI, MI, and HE. |
| CFV | Clean Fuel Vehicle |
| DKP | Throttle valve potentiometer |
| TKU | Technical customer documentation |
| EL-V | Electronically controlled carburetor |
| 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) |
| EC | Ecuador |
| LIA | Lift axle |
| IMP | Pulse(s) |
| ELV | Electrical air valve, or Electronic steering or steering-column lock. See also ESL. |
| IVLAN | In Vehicle Local Area Network |
| NWS | Camshaft timing |
| ZBR | Central vehicle computer |
| HCCI | Homogeneous Charge Compression Ignition |
| WL | Warning lamp |
| HR | Hybrid control, or Right rear, or Croatia |
| EGRBV | Exhaust Gas Recirculation Bypass Valve |
| KD | Kickdown or Customer service |
| MM | Millimeter, physical unit |
| VAG | Volkswagen AG, vehicle maker, proper name |
| BBR | Wideband noise test, method for testing potentiometers |
| MNEFZ | Modified new European driving cycle (exhaust-gas test cycle). See also NEFZ. |
| ITGS | Intelligent traffic guidance system (Mercedes) |
| SIS | Service Information System, proper name or Series repair |
| CRP | Common Rail pump. Special high-pressure pump for the Common Rail system, or Car phone (Opel) |
| SSA | Automatic start/stop |
| SWD | Vibration damper |
| FEL | Family Emission Limit |
| EPSV | Electrical injection adjustment |
| WEBER | Weber petrol injection |
| EHSW | Electrohydraulic positioner |
| TMOT | Engine temperature (in °C), usually determined from coolant |
| VR | Right front or Distributor pump with radial piston |
| AFM | Air Flow Meter |
| SCL | Steering Column Lock |
| EGS | Electronic transmission control |
| DKA | Throttle valve actuator, Ecotronic |
| ILV | Integrated quiet-running system |
| ECU | Electronic control unit, proper name |
| M3/H | M³/h: cubic meters per hour, unit |
| I1 | Incremental system with one sensor |
| B.P.T. | Pressure control valve |
| AGRL | EGR position sensor (Lagesensor) |
| IAC | Idle air control, i.e. idle speed control, for injection engines |
| MR | Engine relay or Engine control for ASR |
| VSV | Vacuum switching valve |
| UIS | Unit injection system, new designation for PDE systems (diesel injection systems with pump-nozzle unit) |
| WK | Converter clutch |
| GRPE | Working Party on Pollution and Energy (Group de Rapporteurs surla Pollution et l’ Énergie) |
| BTC | Bosch traffic controller, traffic monitoring system |
| FV | Filling valve |
| ACM | Aftertreatment Control Module |
| U | Requested (Usoll) |
| RPA | Flat tyre indicator |
| BEV | Battery electric vehicle |
| TLA | Three Letter Acronym (SAE J1930) |
| UN | United Nations |
| APP | Accelerator Pedal Position |
| KVA | Fuel consumption gauge |
| KFB | Fuel filter, petrol or Comfort zone |
| C.R. | Compression ratio |
| ECM | Electronic Control Module, system name, usually proper name |
| KBA | Federal Motor Vehicle Office (Germany) |
| NTC II | Idle speed increase |
| USV | Change-over valve |
| KMA | Continuous volume analysis, product name (Bosch) |
| GGS | Transmission group switch |
| MEINS | Injection volume (in mg/stroke or mg/s) |
| SBE | Seat-occupied detection |
| TVSV | Temperature dependent vacuum switching valve |
| BDM | Petrol/diesel speed measurement module |
| FBB | Start-of-delivery blocking |
| ADF | Boost pressure sensor |
| SRE | Intake-manifold injection |
| TUEV | German vehicle-inspection authority |
| PROM | Programmable read-only memory, usually proper name |
| TBI | Throttle body injection, central injection |
| EMI | Electro-Magnetic Interference (SAE J1930) |
| YRS | Yaw rate sensor. Component of ESP system |
| ES | Electronic control unit or El Salvador |
| KBZ | Combination brake cylinder |
| FWA | Chassis analysis. Sometimes also used as product designation (such as FWA 400) |
| UEB | Gearing ratio (Übersetzung) |
| HK | Height correction or Hong Kong |
| BV | Brake valve |
| BLDC | Brushless direct current motor |
| TP | Throttle valve potentiometer (actuator) |
| EST | Electronic spark timing, electronic map ignition control. See also MSTS |
| ID | Identifier, bei CAN-Bus-Systemen eine Art Address-Byte, das angibt, für wen ein Datenblock bestimmt ist oder Identifikation |
| GSH | Gas sensor hydrocarbon, hydrocarbon sensor |
| GGF | Possibly, if necessary |
| RWG | Control-travel sensor |
| STH | Stationary-vehicle heater |
| CN6 | China 6 |
| COP | Col On Plug |
| REC | Rear electrical centre (Opel) |
| D4 | German exhaust-gas standard, parallel to European standard. Corresponds largely to EU4. See EU4 and EURO4. |
| TBB | Drum-brake shoes |
| ZDT | Cyclical nozzle-exchange procedure |
| ECO | Ecotronic, system name, usually proper name |
| PCU | Pump control unit (diesel systems), or Power control unit, hybrid-drive control (Honda) |
| UAE | United Arab Emirates |
| ETV | Electronic throttle valve |
| FI | Filter |
| KWP 2000 | Keyword Protocol 2000, log for transmitting diagnostic data |
| CAN-L | CAN Low. One of the two data lines in the CAN bus system. See also CAN. |
| AWS | Evaluation switching unit (Bosch KH) |
| UD-MODUL | Vacuum module. Valve for switching and measuring intake manifold pressure |
| Q-AVG | Quantity average. Mean of (fuel) quantity of all cylinders |
| EBM | Electronic brake management system. Optimises driving stability, traction, and braking function (BMW) |
| ABS | Anti-lock Braking System |
| SMM&T | Society of Motor Manufacturers and Traders |
| RQS | Reductant Quality Sensor |
| DQ | Delta quantity, difference quantity. See also Q. |
| TLEV | Transient low-emissions vehicle (group in exhaust-emissions classification). Comprises vehicles with low emissions levels. See also LEV, NLEV, SULEV, ULEV, and ZEV. |
| RWAWS | Control-travel evaluation circuit |
| AECS | Auxiliary Emissions Control Strategy (The EU term for AECD) |
| MPH | Mph: Miles per hour, physical unit |
| TPM | Tyre Pressure Monitoring |
| ETC | European Transient Cycle (SAE J1930) |
| SIL | Seat electrical system, left |
| EDG | Electronic diesel control with integrated transmission control. MCC control unit, proper name. |
| NMHC | Non-Methane Hydrocarbon |
| HPDI | High pressure direct injection |
| NM/S | Newton-meters per second, unit |
| MAR | Quantity compensation control |
| WIG | Wiper pulse transmitter |
| BFA | Passenger airbag. See also BF-AB. |
| OT | Top dead centre |
| MDA | Engine speed increase |
| L/KM | Liters per kilometer, unit |
| 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. |
| 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, P24C6, P2463, P2452 - P2455 |
| CANDI | Can Diagnostic Interface |
| MBS | Engine-brake switch |
| DIGIJET | Digitally controlled fuel injection, system name, proper name |
| TEV | Tank ventilation valve or Thermostatic expansion valve (heating/air conditioning) |
| LL-STAB | Idle stabilization |
| 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. |
| EHCM | Electrohydraulic control module |
| HL | Left rear |
| KSE | Child-seat detector |
| MFI-S | Sequential multipoint fuel injection (electronic) |
| IPC | Instrument Panel Cluster |
| EUI | Electronic unit injector, injection nozzle of pump-nozzle system (diesel injection) |
| N | RPM, or normal |
| T-OFFSET | Time offset |
| PFI | Port fuel injection, inlet-channel injection |
| OZA | Oxygen/zirconium emissions sensor. Zirconium oxide sensor. See also OTA. |
| VVW | Variable valve displacement |
| FCKW | Chlorofluorocarbon (CFC). Gaseous chemical compound that destroys the ozone layer. Contained in old refrigerants (R12) for air conditioners. |
| DI/DIST | Distributor type |
| PNABUE | Pneumatic adjustment device, pressure-operated (Bosch KH) |
| BF | Passenger, or passenger-side |
| NH30C | Ammonia Oxidation Catalyst |
| KRS | Anti-knock control interface or Fuel return valve |
| RSV | Check valve, prevents undesired reverse-flow of liquids or gases |
| NVLD | Natural Vacuum Leak Detection |
| ARD | Active jerking suppression |
| MSR | Engine drag torque control, usually proper name |
| T-EIN | Build-up time |
| SACV | Secondary air control valve |
| SDI | Intake diesel injection |
| FHE | Road and obstacle detection |
| CVT | Continuously variable transmission |
| LKE | Load piston unit |
| HDDE | Heavy Duty Diesel Engine |
| PRC | People's Republic of China |
| UERB | Rollbar |
| OR | Logical OR operation |
| TPM | Tempomat (cruise control) |
| WSKS | Converter clutch switch |
| DLC | Data link connector. Diagnosis connection |
| IRAF | Infrequent Regeneration Adjustment Factor |
| N | Selector-lever position (Neutral) for automatic transmissions, or Norway |
| TT | TT division. Black-and-white division of brake circuits: one circuit in front, one in rear. |
| DID | Data Identifier |
| EU3 | European exhaust-gas standard, valid from 2000 (levels: HC 0.2, CO 2.3, NOx 0.15) |
| DZV | Digital ignition, fully electronic |
| DIAGL | Diagnosis L line, signalling line |
| ICCT | International Council on Clean Transportation |
| SCR | Selective Catalytic Reduction |
| U-KAT | Unregulated catalytic converter (without oxygen sensor control) |
| ZAB | Central display and operating unit for information |
| GMA | Yawing moment buildup delay |
| ABT | Averaging Banking and Trading |
| RMI | Repair and Maintenance Information |
| NOE | Nitrogen oxide emission |
| FBG | Start-of-delivery sensor |
| EU | European Union |
| IZA | Integrated ignition system |
| SPOUT | Ignition signal (EEC IV) |
| TSZ-IZA | Transistor ignition with ignition coil in distributor |
| NFZ | Commercial vehicle (lorry, truck) |
| ME | Motronic with electronic gas pedal, usually proper name, or Control unit for volume regulation in diesel systems, usually proper name |
| WOT | Wide Open Throttle |
| PY | Paraguay |
| SOx | Sulfur Oxides |
| ELB | Electronically controlled brake |
| OZ | Octane rating. See also ROZ. |
| NTC | Negative temperature coefficient, thermal resistor with negative temperature coefficient, so-called hot conductor |
| HYAB | Hydraulic shutoff device |
| BRP | Wideband noise test, method for testing potentiometers |
| NGV | Natural Gas Vehicle |
| PH | Pressure high, high pressure |
| ENG FAIL | Engine failures, diagnosis line for outputting errors |
| MSG | Engine control unit |
| EPA | Environmental Protection Agency, air purity monitoring organisation |
| 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) |
| EPT | Electronic pressure transmission |
| RDW | Rest of the world (group in exhaust-gas classification) |
| AS-T | Exhaust-gas sensor for temperature |
| DBC | Dynamic brake control |
| CDN | Canada |
| VFR | Variable focus reflector (headlight) |
| NIC | Nicaragua |
| IC | Integrated circuit |
| FR | FR signal: provides engine or engine/transmission control unit with information about generator load. |
| EAS | Electronically autonomous starting system or electronic actuation system, usually trade name or electronic air suspension (VAG) |
| FMVSS | Federal motor vehicle safety standard |
| MFU | Multifunction clock |
| THC | Total Hydrocarbons |
| SAC | Self-adjusting clutch. Transmits only the current engine torque |
| FLA | Vehicle performance analysis, product name for performance test stand (Bosch), or Spring-loaded idle stop |
| FZ | Vehicle |
| NPB | Delivery volume normal test stand (special tester for injection pumps) |
| BC | Blink code |
| DYN | Dynamic |
| CMP | Camshaft positioning sensor |
| DEC | Diagnostic or Emission Critical (e.g. DECLECU) |
| GBR | Seat belt positioner |
| LNG | Liquefied Natural Gas |
| ART | Distance-based cruise control |
| AFS | Advanced front-lighting system. Variable light distribution via movable reflectors |
| KOER | Key-On Engine Running |
| SIA | Service interval indicator. Shows the driver that oil change or annual inspection is required, for example. See also WIV. |
| EMC | Electromagnetic compatibility (see also EMV) |
| 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. |
| T-VIS | Toyota variable intake system (cut-in at 4500 rpm in 16-valve engines) |
| CCC | China Compulsory Certification |
| SPL | Noise level, or Sound-pressure level |
| P-FP | P-FP: Delivery pump pressure. |
| WE | Water injection |
| PNAB | Pneumatic adjustment device |
| KR | Anti-knock control |
| OLS | WinOLS complete file containing ECU Data and definition for Map and Axis Data |
| WFS | Immobilizer |
| TMB | Door module, passenger side |
| MTM | Engine measurement technology module |
| PMR | Private mobile radio |
| SDM | Sunroof motor or Control unit diagnosis module |
| AdBlue | Trademarked name for Diesel Exhaust Fluid |
| GR | Gr: large Gr: Group GR: Gas retention, or Greece |
| STOE | Stop external, external stop switch |
| EWM | Electronic selector-lever module. Control unit in Mercedes, usually proper name |
| OG | Upper limit or Upper tolerance limit |
| AYC | Active yaw control. Rear-axle limited-slip differential (Mitsubishi). See also ACD. |
| EO | Executive Officer |
| EECS | Fuel vapour emission control system |
| 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. |
| UVS | Rollbar and variable sunroof control (Mercedes) |
| 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. |
| VDC | Vehicle distance control or Vehicle dynamics control |
| MOLIS | Modular lights system. LEDs in modular system for rear lights, for example (BMW) |
| FP | Accelerator pedal or Delivery pump |
| LDP | Leak Detection Pump |
| ROPS | Rollover protection system. Automatically extendable rollbar (Volvo) |
| REL | Relay |
| IHE | Integrated hydroelectronics unit. Control electronics, hydraulic generator, and electric motor in Citroen Hydraktiv chassis. |
| TSZ | Transistor coil ignition with discrete components |
| 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. |
| PTS | Park-Tronic System. Parking aid. See also PDC. |
| ASOV | Air Shut Off Valve |
| RHD | Right-hand drive |
| 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. |
| PPM | Parts-per-million, unit |
| NHG | Needle-displacement sensor (diesel systems) |
| SBC | Sensotronic Brake Control, part of EHB (electrohydraulic brake) system |
| LMM | Air-mass sensor, or Air-flow sensor |
| DMM | Digital multimeter |
| SBB | Disc-brake lining |
| SSD | Steel sliding sunroof |
| FBKW | Crankshaft angle at start-of-delivery |
| GDI | Gasoline direct injection, designation for petrol direct injection systems or vehicle models with this system. Usually proper name. |
| PG | Phase sensor |
| PC | Power control or Personal computer |
| GST | Generic Scan Tool (SAE J1930) |
| HIC | Hot idle compensation |
| CAC | Charge Air Cooler |
| FAB | Failcode Airbag. Output line for error codes for airbag system (Mazda) |
| MIN | Minimum |
| DFI | Direct Fuel Injection |
| EHU | Entertainment Head Unit |
| PIP | Profile ignition pickup, ignition output circuit (Ford) or Signal of Hall sensor for crankshaft RPM and position |
| CNS | Combustion noise sensor, measures combustion noises (knock sensor) |
| AT | Automatic transmission |
| PEMS | Portable Emission Measurement System |
| DA | Boost pressure dependent full-load stop |
| CS | Charge sustaining (SAE J1930) |
| UNI2 | Additional lines on universal adapter cable, used to read out flash codes or for special purposes |
| FIN | Finland |
| NHU | Navigation head unit. Opel navigation control unit. |
| UD-F | Vacuum adjustment EARLY |
| 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. |
| RIV | Control pulse method (diesel) |
| RMC-SET | Ramped Mode Cycle – Supplemental Emissions Test |
| PDOE | Nozzle opening pressure |
| BM | Reference mark |
| XDF | X definition file is a customized bin definition files (XDF) for free tuning software TunerPro which include the maps to manage engine/gearbox |
| NR | Number, or Level control, or Natural rubber (often processed for use in truck tyres). |
| ESPV | Electrical injection adjustment |
| VAC | Variant coding |
| MT | Manual transmission or Mechanical transmission or Volume divider |
| DSA | Dynamic stability assistance |
| HAU | Automatic heating |
| WSK | Converter clutch used in semiautomatic transmission |
| RDK | Tire pressure check system, usually proper name |
| ULEV | Ultra-low emissions vehicle (group in exhaust-gas classification). See also LEV, NLEV, SULEV, TLEV, and ZEV. |
| NLEV | National low-emission vehicles. US approval level for vehicles that must fulfil the current requirements. See also LEV, SULEV, TLEV, ULEV, and ZEV. |
| CVS | Constant Volume Sampler |
| ODS | Automatic overdrive control |
| CID | Camshaft identification (position) sensor |
| СМР | Camshaft Position |
| DFM | Dynamo field monitor. Output for recording dynamo field |
| EHS | Electrohydraulic control module |
| PRS | Programmed restraint system. Reduces the seat-belt tension and thus upper-body injuries (Renault) |
| VRS | Relay supply voltage |
| OP | Oil pump |
| OAI | Octane adjust input |
| ESV | Feed valve or Injection valve |
| RLDM | Rear Left Door Module |
| KFMG | Continuous delivery-volume meter |
| URS | Rollover sensor, usually proper name |
| TSH | Door lock heater |
| ISO | International Organisation for Standardisation |
| TWA | Twin-wheel axle. Axle with twin tires on each side. |
| HDI | High-pressure direct injection |
| 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. |
| CRW | Common Rail parameters (also CR-W) |
| MMS | Engine torque, nominal value |
| MTCO | Tachograph |
| PI | Positive Ignition (SAE J1930) |
| 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) |
| P-IN | Delivery pressure |
| IND | India |
| IN | Inlet (intake) manifold or valve |
| PES | Polyellipsoid system (headlight technique) |
| THA | Thailand |
| BD | Baud. Unit for data transmission rate. 1 baud is 1 bit/second. |
| NZ | New Zealand |
| BVA | Brake wear indicator |
| FBN | Start of delivery, normal |
| C3/B7 | C3/B7 signal (speed signal for trip recorder) |
| TIM | Time impulse |
| RSD | Backflow throttle |
| BAR | Bar, physical unit |
| SVM | Seat adjustment motor |
| MAS | Control unit for engine assembly |
| PBSL | Park brake shift lock. Selector lever lock for automatic transmission (Opel) |
| NA | Auxiliary drive or Netherlands Antilles |
| RHO | Greek letter, represents density (kg/m³) |
| EGN | EGAS control unit, n=version, usually proper name |
| MK | Motronic with continuous fuel metering, usually proper name |
| EMR | Electronic volume reduction |
| PASE | Passive start and entry. Keyless access to car and engine start (Siemens system). Also called Keyless Go (Mercedes, for example) |
| MLN | Motronic based on air-flow sensor, n=version, usually proper name. See also LM. |
| CDL | Central door locking, central locking system limited to doors (Opel) |
| MMI | Engine torque, actual value or Man-machine interface (Porsche designation) |
| STAT | Static |
| USA | United States of America |
| US06 | Aggressive High Speed Driving Cycle |
| GRV | Constant-volume valve |
| NB | Commercial-vehicle brake |
| MFL | Multifunction steering wheel |
| SHED | Sealed Housing for Evaporative Emission Determination |
| BOU | Brake operating unit, controls and activates the brakes |
| 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 |
| CIFI | Cylinder-individual fuel injection, usually proper name |
| EV2 | Injection valve for low pressure |
| PDM | Passenger door module (Opel) |
| KSH | Cold-start aid |
| LEV | Low-emissions vehicle. Designation for vehicles with low emissions level. See also NLEV, SULEV, TLEV, ULEV, and ZEV. |
| FZR | Vehicle controller, ESP system component |
| RW | Control travel |
| FCV | Fuel cell vehicle. Vehicle with fuel-cell drive, up to now only a Ford prototype. |
| NRZ | NRZ format: Non-return-to-zero, transmission or pulse form for square-wave pulses and signals |
| DC | Direct current or DaimlerChrysler |
| 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. |
| CPS | Camshaft position/speed sensor / Crankshaft position sensor |
| QUADR | Quadrifoglio, Alfa Romeo model designation |
| IR | Individual control with commercial-vehicle ABS systems, or Infrared, or Iran |
| TANS | Intake air temperature (in °C) |
| LEN | Jetronic, intermittent, covers European functionality, n=version, usually proper name |
| AMT | Automated Manual Transmission |
| CD | Charge Depleting (SAE J1930) |
| DLS | Digital idle stabilisation |
| HSPV | Hydraulic injection timing device |
| FBR | Start-of-delivery control |
| KSA | Kingdom of Saudi Arabia |
| NM | Newton-meter, physical unit |
| MPN | MPn: Motronic in which load detection is via intake manifold pressure, n=version, usually proper name |
| MOT | Engine tester, product name (Bosch) or Engine test |
| EVR | Electronic vacuum regulator |
| ECT | Engine coolant temperature, or temperature sensor |
| AUS | Ultrasonic Alarm System |
| VFD | Vacuum fluorescence display |
| EKP | Electric fuel pump |
| PDAS | Dynamic 4-wheel control, usually proper name |
| UB | Battery voltage, supply voltage at terminal 30 |
| PCV | Positive crankcase ventilation, closed crankshaft ventilation |
| GS 1.2 | Electronic transmission control, Version 1.2, system name, proper name |
| HD | Heavy Duty (SAE J1930) |
| HPA | hectopascal, physical unit |
| WT | Heat exchanger |
| DWA | Theft warning system, BMW-specific designation |
| NEDC | New European driving cycle (procedure for fuel consumption measurement). See also NEFZ |
| ESP | Electronic stability program, another designation for vehicle-dynamics control (FDR), usually proper name |
| KDS | Kickdown switch |
| TSZ-H | Transistor coil ignition with Hall sensor |
| CARIN | Autopilot system, Mercedes |
| AI | Air injection |
| HFG | Hand-operated gas delivery, for example in special vehicles for handicapped drivers |
| DSB | Pressure sensor in/for combustion chamber |
| ARA | Anti-jerking control |
| EZS | Electronic ignition switch |
| EGR | Exhaust gas recirculation, duty cycle is highest at idle and light throttle, so the higher percentage means the EGR valve is open more |
| FSD | Folding sunroof |
| GST | Stepped start volume |
| ODX | Open Diagnostic Exchange |
| MVL | Lift axle valve with electronic air-cushioning system |
| FJI | Fiji Islands |
| KPN | Motronic (load detection occurs via intake manifold pressure, n=Motronic version, usually proper name) |
| MGND | Engine ground (earth) |
| RUV | Static high-voltage distribution, usually proper name |
| AM | Central America |
| VEZ | Fully electronic ignition system |
| DSV | Pressure control valve |
| RUM | Soot amount |
| HDP | High-pressure pump |
| SCAN TOOL | Tester for reading OBD error codes and other OBD data |
| HW | Hardware |
| VSO | Vehicle speed out |
| EEC | Fully electronic engine control or Electronic ignition timing, proper name |
| VRM | Valve feedback |
| LSCAN | Low-speed controller area network. CAN bus with low transmission rate (Opel). See also CAN, MSCAN, and HSCAN. |
| UUAA | Used Up All Adjustment UUAAA |
| DOC | Diesel Oxidation Catalyst |
| SDM | Sensing and Diagnostic Module (airbag) |
| QSF | Average function |
| MMV | Quantity solenoid valve |
| 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. |
| CY | Calendar YearDEF |
| ARR | Exhaust-gas recirculation control |
| QM | Quality management |
| 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. |
| LHN | Jetronic with hot-wire air-mass sensor, intermittent, n=version, usually proper name |
| DBE | Roof operating unit, control unit in Mercedes, usually proper name |
| WR-HO2S | Wide Range Heated Oxygen Sensor |
| CATARC | China Automobile Technical and Research Center |
| ZDE | Intermediate RPM adjuster |
| OC | Open Circuit (SAE J1930) |
| FBS | Driving enabling system (Mercedes), or Failcode Brake System. Output line for error codes for ABS system (Mazda) |
| SKF | Spike characteristic. Relates to Porsche transmission controls. |
| SPA | Mirror drive |
| ROZ | Research octane number |
| IDIS | Integrated driver information system, similar to navigation system |
| KM | Kilometer, physical unit |
| TELE-AID | Telematic alarm identification on demand, accident notification |
| GOL | Persian Gulf states |
| EHA | Electronic automatic heater, usually proper name |
| TV | Timing valve |
| POBSY | Pedestrian protection optimised bumper system. Ford bumper system made from energy-absorbing foam plastics to protect pedestrians. |
| WSG | Separate control unit |
| KOEO | Key-On Engine Off |
| SFT | Short (term) fuel trim (lambda-parameter correction). See also STFT. |
| HEV | High-pressure injection valve |
| SS | Safety switch, normally open (sensor 9) |
| HP | Hydraulic pump |
| HEGO | Heated exhaust-gas oxygen sensor |
| DUH | Deutsche Umwelthilfe e.V. |
| RHV | Static high-voltage distribution |
| LVW | Loaded Vehicle Weight |