P0C1DElectric/Auxiliary Transmission Fluid Pump Control Module Internal Temperature Sensor Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0C1D means the internal temperature sensor of the auxiliary pump module delivers an electrically valid value that does not fit the other temperatures in the vehicle. No manufacturer documents this exact code publicly. GM's comparable check on the 2016 ELR pump controller, own code P1E36, runs after at least 6 hours of inactivity: the inverter reading is compared with the average of the power electronics coolant and transmission fluid temperatures, and a difference above 20 °C fails, Type B, MIL after two trips. A sensor that reads too low would let the board overheat unnoticed, which is why the Honda pump patent bases shutdown on this value. P0C1E and P0C1F cover voltage out of range, P0C1B real overtemperature.
- What you may notice
- MIL after repeated detection
- Start-stop restricted or unavailable
- Likely causes
- LikelyBoard temperature sensor drifted or measuring circuit out of tolerance
- PossibleReference value wrong because the transmission fluid or coolant temperature sensor is faulty
- RareInternal fault of the pump control module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €1,800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.