Abbreviations And Acronyms For Automotive Reference Help
Use this page as a quick reference guide, for those common Abbreviations And Acronyms you always use.
Automotive Abbreviations And Acronyms Reference List
- A/C = Air Conditioning
- A/F = Air/Fuel Ratio
- A/T = Automatic Transmission or Transaxle
- ABS = Antilock Braking System
- ABSV = Air Bypass Solenoid Valve
- AC = Alternating Current
- ACTS = Air Charge Temperature Sensor
- AFC = Air Flow Control
- AFM = Air Flow Meter
- AFS = Air Flow Sensor
- APS = Absolute Pressure Sensor
- APS = Atmospheric Pressure Sensor
- ATDC = After Top Dead Centre
- ATF = Automatic Transmission Fluid
- ATS = Air Temperature Sensor
- AWD = All Wheel Drive
- B+ = Battery Positive Voltage
- BAT = Battery
- BCM = Body Control Module
- BMAP = Barometric/Manifold Absolute Pressure Sensor
- BPS = Back pressure Sensor
- BPT = Back Pressure Transducer
- BTDC = Before Top Dead Centre
- C3I = Computer Controlled Coil Ignition
- CAN = Controller Area Network
- CANP = Canister Purge Solenoid Valve
- CAS = Crank Angle Sensor
- CDI = Capacitor Discharge Ignition
- CEAB = Cold Engine Air Bleed
- CECU = Central Electronic Control Unit
- CER = Cold Enrichment Rod
- CESS = Cold Engine Sensor Switch
- CFI = Central Fuel Injection
- CFI = Continuous Fuel Injection
- CID = Cubic Inch Displacement
- CIS = Continuous Injection System
- CKP = Crankshaft Position Sensor
- CMP = Camshaft Position Sensor
- CO = Carbon Monoxide
- CO2 = Carbon Dioxide
- COP = Coil On Plug ignition
- CPI = Central Port Injection
- CPU = Central Processing Unit
- CSSA = Cold Start Spark Advance
- CSSH = Cold Start Spark Hold
- CTS = Coolant Temperature Sensor
- CTVS = Choke Thermal Vacuum Switch
- CVR = Control Vacuum Regulator
- DC = Direct Current
- DEFI = Digital Electronic Fuel Injection
- DFS = Deceleration Fuel Shut Off
- DIS = Distributorless Ignition System
- DIS = Direct Ignition System
- DLC = Data Link Connector
- DOHC = Double Over Head Camshaft
- DTC = Diagnostic Trouble Code
- DVOM = Digital Volt Ohm Meter
- EACV = Electronic Air Control Valve
- EBCM = Electronic Brake Control Module
- EBM = Electronic Body Module
- ECA = Electronic Control Assembly
- ECM = Engine Control Module
- ECT = Engine Coolant Temperature
- ECU = Electronic Control Unit
- EDIS = Electronic Distributorless Ignition System
- EEPROM = Electronically Erasable Programmable Read Only Memory
- E2PROM = Electronically Erasable Programmable Read Only Memory
- EFC = Electronic Fuel Control
- EFCA = Electronic Fuel Control Assembly
- EFI = Electronic Fuel Injection
- EGO = Exhaust Gas Oxygen Sensor
- EGR = Exhaust Gas Recirculation
- EGRPS = EGR Valve Position Sensor
- EGRT = EGR Temperature
- EI = Electronic Ignition
- EMI = Electromagnetic Interference
- EMR = Electronic Module Retard
- EOS = Exhaust Oxygen Sensor
- EPOS = EGR Valve Position Sensor
- EPROM = Erasable Programmable Read Only Memory (chip)
- ESC = Electronic Spark Control
- EST = Electronic Spark Timing
- EVAP = Evaporative Emission System
- EVP = EGR Valve Position Sensor
- FBC = Feedback Carburetor System
- FBCA = Feedback Carburetor Actuator
- FCS = Fuel Control Solenoid
- FDC = Fuel Deceleration Valve
- FI = Fuel Injection
- FLS = Fluid Level Sensor
- FWD = Front-Wheel Drive
- GDI = Gasoline Direct Injection
- GEN = Generator
- GND = Ground
- GVW = Gross Vehicle Weight
- HC = Hydrocarbon
- HEGO = Heated Exhaust Gas Oxygen Sensor
- HEI = High Energy Ignition
- HO2S = Heated Oxygen Sensor
- HT = High Tension
- IAC = Idle Air Control
- IAT = Intake Air Temperature
- IATS = Intake Air Temperature Sensor
- IC = Integrated Circuit
- ICM = Ignition Control Module
- ICS = Idle Control Solenoid
- IFI = Indirect Fuel Injection
- IGN = Ignition
- ISC = Idle Speed Control
- ISO = International Standards Organization
- ITCS = Ignition Timing Control System
- ITS = Idle Tracking Switch
- KOEC = “Key On, Engine Cranking”
- KOEO = “Key On, Engine Off”
- KOER = “Key On, Engine Running”
- KS = Knock Sensor
- LCD = Liquid Crystal Display
- LED = Light Emitting Diode
- LTFT = Long Term Fuel Trim
- MAF = Mass Air Flow
- MAP = Manifold Absolute Pressure
- MAT = Manifold Air Temperature
- MCS = Mixture Control Solenoid
- MCT = Manifold Charge Temperature
- MFI = Multi Port Fuel Injection
- MIL = Malfunction Indicator Light
- MPFI = Multi Point Fuel Injection
- MPI = Multi Port Injection
- NOX = Oxides of Nitrogen
- NVRAM = Nonvolatile Random Access Memory
- O2 = Oxygen
- O2S = Oxygen Sensor
- OBD I = Onboard Diagnostics One
- OBD II = Onboard Diagnostics Two
- OE = Original Equipment
- OEM = Original Equipment Manufacturer
- OHC = Over Head Camshaft
- OHV = Over Head Valve
- OS = Oxygen Sensor
- P/B = Power Bakes
- PA = Pressure Air
- PAIR = Pulsed Secondary Air Injection
- PAS = Power-Assisted Steering
- PCM = Powertrain Control Module
- PCV = Positive Crankcase Ventilation
- PECV = Power Enrichment Control Valve
- PFI = Port Fuel Injection
- PIP = Profile ignition pickup
- PNP = Park/Neutral Switch
- PROM = Program Read Only Memory (chip)
- PS = Power Steering
- PSI = Pounds Per Square Inch
- PSP = Power Steering Pressure
- PTC = Pending Trouble Code
- PWR = Power to Weight Ratio
- RAM = Random Access Memory
- RFI = Radio Frequency Interference
- ROM = Read Only Memory
- RON = Rated Octane Number
- RPM = Revolutions Per Minute
- SC = Supercharged
- SEFI = Sequential Electronic Fuel Injection
- SES = Service Engine Soon (light)
- SFI = Sequential Fuel Injection
- SOHC = Single Overhead Camshaft
- SRT = System Readiness Test
- SS = Speed Sensor
- SSI = Solid State Ignition
- STFT = Short Term Fuel Trim
- TACH = Tachometer
- TB = Throttle Body
- TBI = Throttle Body Injection
- TC = Turbocharged
- TCC = Torque Converter Clutch
- TCM = Transmission or Transaxle Control Module
- TD = Turbo Diesel
- TDC = Top Dead Centre
- TDI = Turbo Direct Injection (A turbocharged direct injected diesel engine)
- TIV = Thermactor Idle Vacuum Valve
- TPI = Tuned Port Injection
- TPP = Throttle Position Potentiometer
- TPS = Throttle Position Sensor
- TPT = Throttle Position Transducer
- TSP = Throttle Solenoid Positioner
- TV = Throttle Valve
- TVS = Thermal Vacuum Switch
- TWC = Three Way Catalyst
- TWC+OC = Three Way + Oxidation Catalytic Converter
- VAC = Volts Alternating Current
- VAF = Volume Air Flow
- VAF = Vane Airflow Sensor
- VCC = Viscous Converter Clutch
- VCM = Vehicle Control Module
- VIN = Vehicle Identification Number
- VR = Voltage Regulator
- VS = Vehicle Sensor
- VSS = Vehicle Speed Sensor
- VVT = Variable Valve Timing
- WOT = Wide Open Throttle
Periodically, Danny’s Engineportal Will Update This Automotive Abbreviations And Acronyms Reference List.
BY DANNY BENDER