P025DFuel Pump Module A Control Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- On demand-controlled fuel systems the engine module does not drive the pump itself but sends a pump control module the desired pump output on a separate control line, usually as a duty cycle; the module reports back on a monitor line or via CAN. P025D means the control circuit to pump module A reads high, typically a short to voltage. On Ford's 3.0 diesel the pump module detects it; on the 6.7 it means a short to voltage on the low side of the pump relay – both continuously monitored and set within 0.5 s. Depending on the design the pump then runs all the time or not at all.
- What you may notice
- Check engine light on
- Pump runs all the time or not at all
- Starting problems
- Likely causes
- LikelyControl line shorted to battery voltage or another wire
- PossibleMoisture in the connector (leakage to voltage)
- PossiblePump control module faulty
- RareRelay stuck or faulty (Ford 6.7)
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.