Ford ETIS IDS reads all diagnostic trouble codes (DTCs) across every module in Ford, Lincoln, and Mercury vehicles. Here is a practical guide to the most common Ford fault codes and what they mean.
Ford DTC Code Structure
Ford uses the SAE standard DTC format with Ford-specific extensions:
- P-codes (Powertrain): Engine, transmission, emissions (e.g., P0300 misfire, P0420 catalyst)
- B-codes (Body): Airbag, PATS, power windows, locks, lights (e.g., B1318 low battery)
- C-codes (Chassis): ABS, traction control, steering, suspension (e.g., C1145 wheel speed sensor)
- U-codes (Network): CAN bus communication faults between modules (e.g., U0100 lost communication with ECM)
Most Common Ford P-Codes
- P0171 / P0174 — System too lean (Bank 1 / Bank 2). Common causes: MAF sensor, vacuum leak, fuel pressure.
- P0300–P0308 — Random/specific cylinder misfire. Check spark plugs, coil packs, injectors.
- P0420 / P0430 — Catalyst efficiency below threshold. O2 sensor or catalytic converter.
- P0446 — EVAP emission control system vent control circuit. EVAP canister vent solenoid.
- P0455 — Large EVAP leak detected. Fuel cap, EVAP lines, or purge valve.
- P0606 — PCM processor fault. Requires PCM programming via Ford IDS.
- P2196 / P2198 — O2 sensor signal stuck rich. Injector leak or O2 sensor fault.
Most Common Ford B-Codes (PATS/Airbag)
- B1213 — Less than 2 keys programmed to PATS. Requires Ford IDS to program additional keys.
- B1232 — Transceiver internal circuit failure. PATS transceiver ring replacement needed.
- B1600 / B1601 — PATS ignition key transponder signal not received. Key chip or antenna fault.
- B0081 / B0082 — Driver/passenger front airbag squib circuit fault. Airbag replacement or connector repair.
Most Common Ford U-Codes (Network)
- U0100 — Lost communication with ECM/PCM. CAN bus fault, wiring issue, or module failure.
- U0101 — Lost communication with TCM. Transmission control module communication fault.
- U0140 — Lost communication with BCM. Body control module CAN bus issue.
- U0401 — Invalid data received from ECM. Module programming mismatch — requires IDS recalibration.
How Ford ETIS IDS Helps With These Codes
Ford ETIS IDS goes beyond just reading codes. For each DTC, it provides:
- Pinpoint test (PPT) — step-by-step diagnostic procedure specific to that code
- Wiring diagrams for the affected circuit
- Component locations and connector pinouts
- Related TSBs that may address the root cause
- Module programming if a code requires reprogramming
