P025CFuel Pump Module A Control Circuit Low
- 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. P025C means the control circuit to pump module A reads low, typically a short to ground. On Ford's 3.0 diesel the pump module detects it; on the 6.7 it means a short on the low side of the pump relay – both within 0.5 s. FCA documents it with the warning light on and sometimes a start followed by stalling, often together with P01C6 and P016F; the checks cover the pump module connector, the low-pressure sensor and a ground point for water, corrosion and pushed-back pins.
- What you may notice
- Check engine light on
- Engine starts and dies again
- Starting problems
- Loss of power from low supply pressure
- Likely causes
- LikelyControl line chafed to ground at the frame
- LikelyWater or corrosion at the pump module connector
- PossibleGround point loose or corroded
- PossiblePump control module faulty internally
- RarePump relay 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.