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Abbreviations
Find a List of Codes Below
- 2WD: 2 Wheel Drive
- 4WD: 4 Wheel Drive
- 4WS: 4 Wheel Steering
- 2V: 2 Valve (cylinder head)
- 4V: 4 Valve (cylinder head)
- AAT: Ambient Air Temperature
- ABS: Antilock Brake System
- AC: Air Conditioning
- ACC: Adaptive Cruise Control also Automatic Climate Control
- A/F sensor: Air Fuel Sensor
- AFR: Air Fuel Ratio
- alt: Alternator
- ARS: Automatic Restraint System
- ARC: Automatic Ride Control
- A/T: Automatic Transmission
- ATC: Automatic Temperature Control
- ATF: Automatic Transmission Fluid
- AWD: All Wheel Drive
- AYC: Active Yaw Control
- Baro: Barometric pressure. Usually a sensor.
- batt: Battery
- BCM: Body Control Module
- BHP: Brake Horsepower
- BTDC: Before Top Dead Center
- CAA: Clean Air Act
- CAFE: Corporate Average Fuel Economy (USA)
- CEL: Check Engine Light
- CFI: Central Fuel Injection
- CFM: Cubic Feet Per Minute
- CG: Center of Gravity
- CID: Cubic Inch Displacement
- CKP Crankshaft Position
- CL: Closed Loop
- cmd: Command
- CMP: Camshaft Position
- CNG: Compressed Natural Gas
- CO: Carbon Monoxide
- comm: Communication
- CO2: Carbon Dioxide
- COP: Coil On Plug
- CPU: Central Processing Unit
- CTS: Coolant Temperature Sensor
- CV: Constant Velocity
- CVT: Continuously Variable Transmission
- dB: Decibels
- DC: Direct Current
- DFI: Direct Fuel Injection
- diff: Differential
- DIS: Direct Ignition System
- dist: Distributor
- DLC: Data Link Connector
- DMM: Digital MultiMeter
- DOHC: Dual Overhead Cam
- DPFE: Differential Pressure Feedback (Ford EGR)
- DRL: Daytime Running Lights
- DTC: Diagnostic Trouble Code
- DVOM: Digital Volt Ohm Meter
- E4OD: Electronic 4-speed Overdrive transmission
- E10: Ethanol 10%
- E85: Ethanol 85%
- EAS: Electronically Assisted Steering
- ECBM: Electronic Brake Control Module
- ECM: Engine Control Module
- ECM: Electronic Control Module
- ECS: Emission Control System
- ECT: Engine Coolant Temperature
- ECU: Electronic Control Module
- EDR: Even Data Recorder
- EEC: Electronic Engine Control
- EPROM: Erasable Programable Read Only Memory
- EFE: Early Fuel Evaporation
- EFI: Electronic Fuel Injection
- EGR: Exhaust Gas Recirculation
- ELC: Electronic Level Control
- EPA: Environment Protection Agency
- EPC: Electronic Pressure Control
- ESC: Electronic Spark Control
- ELD: Electronic Load Detection
- ESP: Electronic Stability Program
- ETC: Electronic Temperature Control
- ETS: Electronic Traction System
- EV: Electric Vehicle
- EVAP: Evaporative Emissions
- FBC: Feedback Carburetor
- FF: Flex Fuel
- FFV: Flexible Fuel Vehicle
- FM: Frequency Modulated
- FPS: Fast Pass Standard
- freq: Frequency
- FT: Fuel Trim
- FTP: Fuel Tank Pressure
- FTPT: Fuel Tank Pressure Transducer
- GAWR: Gross Axle Weight Rating
- GND: Ground
- GPCM: Glow Plug Control Module
- GPS: Global Positioning System
- GVW: Gross Vehicle Weight
- GVWR: Gross Vehicle Weight Rating
- H2O: Water
- HC: Hydrocarbons
- HD: Heavy Duty
- HDR: Hight Data Rate
- HEGO: Heated Exhaust Gas Oxygen sensor (Now HO2S)
- HEV: Hybrid Electric Vehicle
- Hg: Mercury
- HID: High Intensity Discharge
- HO: High Output
- HO2S: Heated Oxygen Sensor
- hp: Horsepower
- HVAC: Heating Ventilation and Air Conditioning
- Hz: Hertz
- IA: Intake Air
- IAC: Idle Air Control
- IAT: Intake Air Temperature
- iATN: INternational Automotive Technicians Network
- IC: Integrated Circuit
- IC: Ignition Control
- ID: Identification
- ID: Inside Diameter
- IDI: Integrated Direct Ignition
- IDM: Ignition Diagnostic Module
- IDM: Injector Driver Module
- IDS: Integrated Diagnostic Software
- IGN: Ignition
- I/M: Inspection Maintenance
- IMA: Integrated Motor Assist
- INJ: Injector
- int: Interior
- I/O: In/Out
- IAC: Idle Air Control
- i-VTEC: Intelligent Variable Valve Timing Electronic Control
- KAM: Keep Alive Memory
- KAPWR: Keep Alive Memory Power
- kg: Kilogram
- kg/h: Kilograms per Hour
- km: Kilometer
- km/h: Kilometer per Hour
- km/l: Kilometers per Liter
- KOEO: Key Off Engine On
- KOER: Key On Engine Running
- kPa: Kilopascal
- KS: Knock Sensor
- kv: Kilovolts
- L: Liter
- L4: Inlie 4 cylinder engine
- LCD: Liquid Crystal Display
- LCM: Lighting Control Module
- LDR: Low Data Rate
- LED: Light Emitting Diode
- LEP: Light Emitting Polymer (glows in the dark)
- LEV: Low Emissions Vehicle
- Lm: Lumens
- LNG: Liquid Natural Gas
- LPG: Liquid Petroleum Gas
- LPM: Liters Per Minute
- LPS: Low Pressure Sensor
- LSD: Limited Slip Differential
- LSUV: Luxury Sport Utility Vehicle
- LT: Long Term (Fuel Trim)
- LTPWS: Low Tire Pressure Warning System
- MAF: Mass Airflow Sensor
- MAP: Manifold Absolute Pressure
- MAT: Manifold Air Temperature
- MC: Mixture Control
- MCU: Microprosessor Control Unit
- MFI: Multiport Fuel Injection
- MGMT: Management
- MIL: Malfunction Indicator Lamp
- mm: Millimeter
- MSRP: Manufacturer Suggested Retail Price
- M/T: Manual Transmission
- mV: Milivolt
- MV: Megavolt
- NC: Normally Closed
- NCAP: New Car Assessment Program
- NAVI: Navigation
- NEG: Negative
- NEU: Neutral
- NG: Natural Gas
- NGV: Natural Gas Vehicle
- NO: Normally Open
- NOx: Nitrogen Oxides
- NPF: No Problem Found
- NPTC: National Pipe Thread Coarse
- NPTF National Pipe Thread Fine
- NV: Night Vision
- O2: Oxygen
- O2S: Oxygen Sensor
- OBD: On Board Diagnostics
- OBDII: On Board Diagnostics generation 2
- OBDIII: On Board Diagnostics generation 3
- OCC: Output Circuit Check
- OCR: Oil Control Ring
- OD: Outside Diameter
- OD: OverDrive
- ODO: Odometer
- OE: Original Equipment
- OEM: Original Equipment Manufacturer
- OHC: Overhead Cam
- OL: Open Loop
- PASS: Passenger
- PB: Power Brakes
- PC: Pressure Control
- PCI: Programable Controller Interface
- PCM: Powertrain Control Module
- PFE: Pressure Feedback EGR
- PGMFI: Programable Multiport Fuel Injection
- PID: Parameter Identification
- PIM: Power Inverter Module
- PIP: Profile Ignition Pickup (also CKP Crank Position)
- POS: Positive
- POT: Potentiometer
- ppm: Parts Per Million
- PRNDL: Park Reverse Neutral Drive Low
- PROM: Programable Read Only Memory
- PS: Power Steering
- PSA: Pressure Switch Assembly
- psgr: Passenger
- psi: Pounds Per Square Inch
- psi a: Ponds Per Square Inch Absolute
- psig: Pounds Per Square Inch Gauge
- PSP: Power Steering Pressure
- PTC: Pending Trouble Code
- PTC: Positive Temperature Coefficient
- PTO: Power Take Off
- PWM: Pulse Width Modulation
- PWR: Power
- RAM: Random Access Memory
- rec: Receive
- REDOX: Reduction Oxidation Catalytic Converter
- REF: Reference
- RFI: Radio Frequency Interference
- RFID: Radio Frequency Identification
- Rly: Relay
- RM: Relay Module
- R&R: Remove and Replace
- RSC: Roll Stability Control
- RTV: Room Temperature Vulcanizing
- RV: Recreational Vehicle
- RWD: Rear Wheel Drive
- SAE: Society of Automotive Engineers
- SDL: Serial Data LInk
- SEFI: Sequential Electronic Fuel Injection
- SEMA: Special Equipment Market Association
- SES: Service Engine Soon
- SFI: Sequential Fuel Injection
- SHO: Super Hight Output
- SIR: Supplemental Inflatable Restraint
- SNSR: Sensor
- SO2: Sulphur Dioxide
- SOC: State of Change
- sol: Solenoid
- S/P: Series Parallel
- SPD: Speed
- SRS: Supplemental Restraint System
- SSV: Shift Solenoid Valve
- ST: Short Term (fuel trim)
- stdby: Standby
- SUV: Sport Utility Vehicle
- sw: Switch
- SWPS: Steering Wheel Position Sensor
- TACH: Tachometer
- TB: Throttle Body
- TBI: Throttle Body Injection
- TC: Transmission Control
- TCC: Torque Converter Clutch
- TCM: Transmission Control Module
- TCS: Traction Control System
- TCU: Transmission Control Unit
- TDC: Top Dead Center
- TEMP: Temperature
- TFI: Thick Film Integrated (Ford Ignition)
- TFT: Transmission Fluid Temperature
- torq: Torque
- TP: Throttle Position
- TPI: Tuned Port Injection
- TPMS: Tire Pressure Monitoring System
- TPS: Throttle Position Sensor
- trans: Transmission
- TSB: Technical Service Bulletin
- TSS: Transmission Speed Sensor
- TV: Throttle Valve
- TVS: Thermal Vacuum Switch
- TWC: Three Way Catalyst
- U/H: Under Hood
- ULEV: Ultra Low Emissions Vehicle
- ULSD: Ultra Low Sulphur Diesel
- unlk: Unlock
- V: Volts
- VAC: Vacuum
- VAF: Vane Air Flow
- VAPS: Variable Assist Power Steering
- VB: Valve Body
- VCM: Vehicle Communication Module
- VCT: Variable Camshaft Timing
- VCDS: Vehicle Dynamics Control System
- VDR: Vehicle Data Recorder
- veh: Vehicle
- vel: Velocity
- ver: Version
- vert: Vertical
- VIN: Vehicle Identification Number
- VSS: Vehicle Speed Sensor
- VSV: Vacuum Solenoid Valve
- VTEC: Variable Timing and Electronic Control
- VVT-i: Variable Valve Timing with Intelligence
- VVTL-i: Variable Valve Timing and Lift with Intelligence
- w/: With
- w/o: Without
- WOT: Wide Open Throttle
- WSS: Wheel Speed Sensor
- X-valve: Expansion Valve
- ZEV: Zero Emissions Vehicle