P0C2C code meaning
Electric/Auxiliary Transmission Fluid Pump Control Module Feedback Signal Range/Performance
Powertrain system Generic code P0Cxx codes Check engine light
What P0C2C means
P0C2C means the feedback signal from the auxiliary pump control module is present and electrically valid but does not make sense, for example a reported speed or status that contradicts the command. No manufacturer documents this exact code publicly. Its siblings show the signal: on GM's Two-Mode trucks P0C2B watches a fault status message expected every 1.5 s, and on the 2021-23 Chevrolet Bolt EV and 2022 Bolt EUV GM bulletin 21-NA-148 pairs P0C2D with the pump performance codes P2797 and P2798, caused by bad solder joints in the low-voltage pump. CARB requires rationality checks for such inputs. Implausible feedback usually points to the pump electronics themselves. P0C2B is the general code, P0C2D and P0C2E the low and high variants.
P0C2C 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 P0C2C
- Service Vehicle Soon or MIL
- Reduced propulsion power or no start-stop
Common causes of P0C2C
- Most likelyElectronics of the pump module reporting wrong status or speed
- PossibleIntermittent contact on the feedback line distorting the signal
- Less likelyPump not following the command mechanically, so feedback and command differ
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 P0C2C 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. |
| 2C | The exact fault in that area. |
What to do next
- Note P0C2C 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 P0C2C
What does P0C2C mean?
P0C2C means "Electric/Auxiliary Transmission Fluid Pump Control Module Feedback Signal Range/Performance". P0C2C means the feedback signal from the auxiliary pump control module is present and electrically valid but does not make sense, for example a reported speed or status that contradicts the command. It is a generic code, so it means the same on every make.
Is it safe to drive with P0C2C?
Drive gently and only to a workshop. With P0C2C the car can go into limp mode (reduced power) to protect itself.
Will P0C2C fail an emissions test?
Yes, it can. P0C2C 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 P0C2C to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P0C2C clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.