NOTE: This acronyms and definitions listing contains technical terms applicable to Ford Motor Company products. It is not intended to be an all-inclusive dictionary of components and their functions. If a detailed description of a particular system or component is desired, refer to the applicable information within this Engine Controls article or refer to the Service Information for the specific vehicle being repaired.

AAT: Ambient Air Temperature

ABS: Anti-lock Brake System

A/C: Air Conditioning

APP: Accelerator Pedal Position

A/T: Automatic Transmission

BARO: Barometric Pressure

BPP: Brake Pedal Position

CAC: Charge Air Cooler

CACT: Charge Air Cooler Temperature

CAN: Controller Area Network

CARB: California Air Resources Board

CCM: Comprehensive Component Monitor

CKP: Crankshaft Position

CMP: Camshaft Position

DEF: Diesel Exhaust Fluid

DFSO: Deceleration Fuel Shut Off

DLC: Data Link Connector

DMM: Digital Multimeter

DPF: Diesel Particulate Filter

DTC: Diagnostic Trouble Code

ECT: Engine Coolant Temperature

EEC: Electronic Engine Control

EEPROM: Electronically Erasable Programmable Read Only Memory

EGR: Exhaust Gas Recirculation

EGRT: Exhaust Gas Recirculation Temperature

EGT: Exhaust Gas Temperature

EMD: Engine Manufacturer Diagnostics

EMI: Electromagnetic Interference

EOT: Engine Oil Temperature

EP: Exhaust Pressure

FLI: Fuel Level Input

FMEM: Failure Mode Effects Management

FP: Fuel Pump

FRP: Fuel Rail Pressure

FRT: Fuel Rail Temperature

FSS: Fan Speed Sensor

GPCM: Glow Plug Control Module

GVWR: Gross Vehicle Weight Rating

IAT: Intake Air Temperature

IDS: Integrated Diagnostic System

IFS: Inertia Fuel Shutoff

IM: Inspection Maintenance

ISO: International Standards Organization

KAM: Keep Alive Memory

KAPWR: Keep Alive Power

km/h: Kilometers per hour

KOEO: Key On Engine Off

KOER: Key On Engine Running

kPa: Kilopascal

L: Liter

lb-ft: Pounds of force per foot

MAF: Mass Airflow

MAP: Manifold Absolute Pressure

MIL: Malfunction Indicator Lamp

MPH: Miles Per Hour

NOx: Nitrogen Oxides

OASIS: On-line Automotive Service Information System

OBD: On Board Diagnostics

OC: Oxidation Catalytic Converter

OD: Overdrive

OSC: Output State Control

OSR: On Board System Readiness

PATS: Passive Anti-Theft System

PCM: Powertrain Control Module

PID: Parameter Identification

PTO: Power Take Off

PTS: Professional Technician Society

PWM: Pulse Width Modulation

RAM: Random Access Memory

RDCM: Reductant Dosage Control Module

RFI: Radio Frequency Interference

ROM: Read Only Memory

RPM: Revolutions Per Minute

RTD: Resistance Temperature Detector

SAE: Society of Automotive Engineers

SCR: Selective Catalytic Reduction

TC: Turbocharger

TCM: Transmission Control Module

TSB: Technical Service Bulletin

VCM: Vehicle Communication Module

VECI: Vehicle Emission Control Information

VID: Vehicle Identification

VIN: Vehicle Identification Number

VSS: Vehicle Speed Sensor

WIF: Water In Fuel

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Acronyms And Definitions

Use the Manual With the Right Hardware

When to See a Mechanic

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