P0C25 code meaning
Electric/Auxiliary Transmission Fluid Pump Control Module Circuit High
Powertrain system Generic code P0Cxx codes Check engine light
What P0C25 means
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.
P0C25 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0C25
- MIL or transmission warning
- Pump runs continuously or start-stop is disabled
Common causes of P0C25
- Most likelyCommand wire shorted to battery or another supply voltage
- PossibleOutput stage in the PCM/TCM stuck high
- Less likelyInput stage of the pump control module faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Aux trans pump control moduleWiring harnessTCM
What each part of P0C25 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| C | Area: hybrid propulsion. |
| 25 | The exact fault in that area. |
What to do next
- Note P0C25 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0C25
What does P0C25 mean?
P0C25 means "Electric/Auxiliary Transmission Fluid Pump Control Module Circuit High". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with P0C25?
Drive gently and only to a workshop. With P0C25 the car can go into limp mode (reduced power) to protect itself.
Will P0C25 fail an emissions test?
Yes, it can. P0C25 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0C25 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P0C25 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.