Term Abbreviations

Auto abbreviations starting with the letter "D"

D - Drive

dB - Decibels

DC - Direct Current Or Discharge

DDD - Dual Diaphragm Distributor

Def. - Defrost

Defog. - Defogger

DEFI - Digital Electronic Fuel Injection

DERM - Diagnostic Energy Reserve Module

DFI - Digital Fuel Injection

DFS - Deceleration Fuel Shutoff

Diag. - Diagnostic

DIC - Driver Information Center

DIS - Distributorless Ignition System

DIST - Distribution

DLC - Data Link Connector

DMM - Digital Multi Meter

DOHC - Double Overhead Cam

DTC - Diagnostic Trouble Code

DOT - Department of Transportation

DRB-II - Diagnostic Readout Box

DVOM - Digital Volt-Ohmmeter

Vehicle Abbreviation Terms beginning with the letter "E"

E2PROM - Electrically Erasable Programmable Read Only Memory

EACV - Electronic Air Control Valve

EBCM - Electronic Brake Control Module

EBL - Electronic Back Light

EBM - Electronic Body Module

ECA - Electronic Control Assembly

ECM - Engine Control Module (sometimes referred to as PCM powertrain control module)

ECT - Engine Coolant Temperature

ECU - Electronic Control Unit

EDIS - Electronic Distributorless Ignition System

EEC - Electronic Engine Control

EECS - Evaporative Emission Control System

EEPROM - Electronically Erasable Programmable Read Only Memory

E2PROM - Electronically Erasable Programmable Read Only Memory

EFC - Electronic Fuel Control

EFCA - Electronic Fuel Control Assembly

EFE - Early Fuel Evaporation

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

EOBD - European Onboard Diagnostics

EPOS - EGR Valve Position Sensor

EPROM - Erasable Programmable Read Only Memory (chip)

ESA - Electronic Spark Advance

ESC - Electronic Spark Control

EST - Electronic Spark Timing

ETC - Electronic Throttle Control

EVAP - Evaporative Emission System

EVIC - Electronic Vehicle Information Center

EVP - EGR Valve Position

Exc. - Except

Automobile Terms for the Abbreviation Starting with the Letter "F"

F - Fahrenheit

F/B - Fuse Block

FBC - Feedback Carburetor System

FBCA - Feedback Carburetor Actuator

FCS - Fuel Control Solenoid

Fed - Federal

FDC - Fuel Deceleration Valve

FI - Fuel Injection

FIPL - Fuel Injector Pump Lever

FPR-VSV - Fuel Pressure Regulator Vacuum Switching Valve

FLS - Fluid Level Sensor - Foot Pound

FWD - Front-Wheel Drive

Car Abbreviation Starting with the Letter "G"

G - Grams

GALS - Gallon

GDI - Gasoline Direct Injection

GEN - Generator

GND or GRND - Ground

GPEC - Global Powertrain Engine Controller

GPM - Grams Per Mile

GPS - Global Positioning System

GVW - Gross Vehicle Weight

Vehicle Abbreviation Term Definitions starting with the letter "H"

H20 - Water

HAC - High Altitude Compensation

HC - Hydrocarbons

H/D - Heavy Duty

HEGO - Heated Exhaust Gas Oxygen Sensor

HEI - High Energy Ignition

Hg - Mercury

HGT - Height

HLDT - Headlight

HO - High Output

HO2S - Heated Oxygen Sensor

HP - High Performance or Horsepower

HSC - High Swirl Combustion

HSO - High Specific Output

HT - High Tension

HTR - Heater

Hz - Hertz(Cycles Per Second)

Vehicle Term Abbreviations starting with "I"

IACV - Idle Air Control Valve

IAT - Intake Air Temperature

IATS - Intake Air Temperature Sensor

IC - Integrated Circuit

ICM - Ignition Control Module

ICS - Idle Control Solenoid

I.D. - Inside Diameter

ID - Identification

IFI - Indirect Fuel Injection

IGN - Ignition

In. - Inches

Inch Lbs. - Inch Pounds

in. Hg - Inches of Mercury

Inj. - Injector

IMRC - Intake Manifold Runner Control

IP - Instrument Panel

ISC - Idle Speed Control

ISO - International Standards Organization

ITCS - Ignition Timing Control System

ITS - Idle Tracking Switch

IVSV - Idle Vacuum Switching Valve

Car Repair Terms Starting with the letter "J"

JAS - Jet Air System

J/B - Junction Block

JTEC - Jeep Truck Engine Controller


Written by
Co-Founder and CEO of
35 years in the automotive repair field, ASE Master Technician, Advanced Electrical and Mechanical Theory.


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Article first published (Updated 2013-08-16)