P0C2DElectric/Auxiliary Transmission Fluid Pump Control Module Feedback Signal Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Can trigger limp mode
- How the car detects it
- 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.
- What you may notice
- Propulsion Power is Reduced message
- Service Vehicle Soon lamp
- Likely causes
- LikelyFaulty solder joints in the electric transmission fluid pump (Chevrolet Bolt, GM 21-NA-148)
- PossibleFeedback line shorted to ground
- RareCorroded or loose pump connector
- Repair
- Medium · Usually a job for a workshop.Typical cost: €250 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.