P0C2D code meaning
Electric/Auxiliary Transmission Fluid Pump Control Module Feedback Signal Low
Powertrain system Generic code P0Cxx codes Check engine light
What P0C2D means
P0C2D reports that the feedback signal from the electric transmission fluid pump module stays low, below its valid range. GM documents it for the 2021-23 Chevrolet Bolt EV and 2022 Bolt EUV in bulletin 21-NA-148: the driver sees Propulsion Power is Reduced and a Service Vehicle Soon lamp, with P0C2D, P2797 or P2798 stored. The cause is a part quality spill in the low-voltage electric transmission fluid pump on the driver side of the drive unit, where a soldering process was out of specification; the motor is not serviceable, so the complete pump is replaced. In this EV the pump supplies fluid for cooling and lubricating the drive unit. P0C2B is the general feedback code, P0C2C the plausibility and P0C2E the high variant.
P0C2D at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium
- Typical labor1 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0C2D
- Propulsion Power is Reduced message
- Service Vehicle Soon lamp
Common causes of P0C2D
- Most likelyFaulty solder joints in the electric transmission fluid pump (Chevrolet Bolt, GM 21-NA-148)
- PossibleFeedback line shorted to ground
- Less likelyCorroded or loose pump connector
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 P0C2D 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. |
| 2D | The exact fault in that area. |
What to do next
- Note P0C2D 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 P0C2D
What does P0C2D mean?
P0C2D means "Electric/Auxiliary Transmission Fluid Pump Control Module Feedback Signal Low". P0C2D reports that the feedback signal from the electric transmission fluid pump module stays low, below its valid range. It is a generic code, so it means the same on every make.
Is it safe to drive with P0C2D?
Drive gently and only to a workshop. With P0C2D the car can go into limp mode (reduced power) to protect itself.
Will P0C2D fail an emissions test?
P0C2D is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P0C2D to fix?
Difficulty: medium. A typical repair takes 1 to 3 hours of work. This is a job for a workshop.
Will P0C2D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.