P0C25Electric/Auxiliary Transmission Fluid Pump Control Module Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0C25 reports that the circuit from the controlling module to the auxiliary pump control module sits high, for instance a command wire shorted to battery voltage or an output that cannot pull the line down. No manufacturer documents this exact code publicly. Ford's 2016 F-150 2.7L bulletin shows the type of signal involved: a PCM duty-cycle command that can be swept from 20 to 90 percent to prove pump operation. A line stuck high can be read as a constant full command or rejected as invalid, so the pump may run continuously or be shut off. GM's ELR pump controller also uses a separate wake-up line as enable. CARB requires circuit monitoring of such outputs. P0C23 is the open circuit, P0C24 the low side, P0C2E the high fault on the feedback line.
- What you may notice
- MIL or transmission warning
- Pump runs continuously or start-stop is disabled
- Likely causes
- LikelyCommand wire shorted to battery or another supply voltage
- PossibleOutput stage in the PCM/TCM stuck high
- RareInput stage of the pump control module faulty
- 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: €50 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.