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