Ford Electrical Diagnostics
Ford uses a Body Control Module (BCM), a Gateway Module (GWM), and the SYNC infotainment system running on the APIM module. Immobiliser and keyless systems, the Restraint Control Module (RCM) for airbags, and electric power steering all communicate over the vehicle network. The Transit and Transit Custom have their own well-documented BCM fault patterns. Ford diagnostics use IDS/FDRS and FORScan for extended access.
Ford Control Modules & Electronics
Key modules and electronic systems used across Ford vehicles. Correct identification of the module is the first step in proper diagnosis.
BCM — Body Control Module
Central body electronics; Transit BCM faults are a known pattern.
GWM — Gateway Module
Network gateway; communication faults cause multiple warnings.
PCM — Powertrain Control Module
Engine and transmission management.
APIM — SYNC Infotainment
SYNC touchscreen and connectivity; freeze and reboot faults.
RCM — Restraint Control Module
Airbag and SRS system.
PSCM — Power Steering Control Module
Electric power steering.
ABS Module
ABS and traction control.
Common Ford Electrical Faults
Faults we frequently see on Ford vehicles. Each links to a detailed, all-makes guide covering symptoms, causes and our diagnostic approach.
Body Control Module (BCM) Faults
Central body electronics controlling locking, lighting, wipers and comfort.
READ GUIDEKey Not Detected
Vehicle doesn't recognise the key — won't start or unlock.
READ GUIDEABS Warning Light
ABS warning on — stability and braking-system fault.
READ GUIDEBattery Warning Light & Vehicle Not Charging
Charging-system fault — battery warning or vehicle not charging.
READ GUIDEParking Assist Unavailable
Parking sensors or park assist not working.
READ GUIDEAirbag / SRS Warning Light
Airbag or SRS warning light on — restraint-system fault.
READ GUIDEElectric Power Steering Fault
EPS warning — steering assistance reduced or unavailable.
READ GUIDEAir Suspension Faults
Air-suspension warning — ride-height or compressor fault.
READ GUIDECAN Bus / Network Communication Faults
Network communication fault affecting multiple modules.
READ GUIDEFord Models We Cover
Ford Electrical Fault?.
Tell us about your Ford, the symptoms and any warning messages. OBD_PAL diagnoses the complete system before recommending any repair — don't guess, diagnose it properly.