OBD-II code · Powertrain (generic)
P0C1D Electric/Auxiliary Transmission Fluid Pump Control Module Internal Temperature Sensor Circuit Range/Performance
The internal temperature sensor signal is outside the calibrated range. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P0C1D?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySensor characteristic drifted
- PossibleThermal lag in module package
- Less likelySensor element aged beyond calibration window
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–8 h
- Emissions test
- Usually unaffected
- Parts involved
- Aux Trans Pump Control Module
Related codes
- P0C1ADrive Motor B Torque Delivered Performance
- P0C1BElectric/Auxiliary Transmission Fluid Pump Control Module Internal Temperature Too High
- P0C1CElectric/Auxiliary Transmission Fluid Pump Control Module Internal Temperature Sensor Circuit
- P0C1EElectric/Auxiliary Transmission Fluid Pump Control Module Internal Temperature Sensor Circuit Low
- P0C1FElectric/Auxiliary Transmission Fluid Pump Control Module Internal Temperature Sensor Circuit High
- P0C20Electric/Auxiliary Transmission Fluid Pump Phase U-V-W Circuit/Open
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.