P0C2AElectric/Auxiliary Transmission Fluid Pump A Motor Stalled
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P0C2A means motor A of the auxiliary pump is commanded but does not turn, or turns far slower than required. Ford documents it in TSB 17-2056 for the 2016 F-150 2.7L with start-stop built from 1 May 2016: with the fluid above 38 °C the technician commands the pump through the PCM at duty cycles from 20 to 90 percent; if it runs, the PCM gets new software, if not, the auxiliary pump is replaced. GM shows how a stall is detected on the ELR pump controller, under its own code P1E3A: commanded minus actual speed above 200 rpm while more than 6.8 Nm is requested, Type A. Sensorless pumps cannot measure speed directly, so a stall shows up as a speed or current mismatch. P0C29 covers the driver stage, P0C28 overcurrent.
- What you may notice
- MIL on
- Start-stop inactive, harsh engagement after stops
- Likely causes
- LikelyAuxiliary pump seized or jammed by debris (Ford F-150 2.7L replaces the pump)
- PossiblePCM calibration causing false stall detection (Ford TSB 17-2056)
- RareVery cold, thick fluid or wrong fluid type raising drag
- RareOpen phase so the motor cannot develop torque
- 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: €50 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.