P0C2CElectric/Auxiliary Transmission Fluid Pump Control Module Feedback Signal Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- 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.
- What you may notice
- Service Vehicle Soon or MIL
- Reduced propulsion power or no start-stop
- Likely causes
- LikelyElectronics of the pump module reporting wrong status or speed
- PossibleIntermittent contact on the feedback line distorting the signal
- RarePump not following the command mechanically, so feedback and command differ
- 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: €100 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.