P0C26Electric/Auxiliary Transmission Fluid Pump A Motor Current
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P0C26 is the general motor current fault of auxiliary pump A: the current drawn does not match what the commanded operating point should need, without clearly being too low or too high. No manufacturer documents this exact code publicly. Its siblings show what is monitored: Ford stores P0C27, current too low, on 2014-16 Fusion and 2015-16 Edge with the 6F35 start-stop transmission when air enters the pump supply tube, and GM sets P0C28 on the Volt and ELR when any phase exceeds 35 A. CARB requires such components to be checked for rationality. A general current code therefore points to aeration, low fluid, a binding pump or current sensing errors. The pump may be switched off and auto-stop blocked; P0C27 and P0C28 are the specific variants.
- What you may notice
- MIL or transmission warning
- Harsh engagement after an auto-stop
- Start-stop deactivated
- Likely causes
- LikelyLow or aerated transmission fluid at the pump intake
- PossiblePump binding or contaminated, changing the motor load
- PossibleCurrent sensing in the pump driver implausible
- RareOutdated control software of the pump or controlling 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: €80 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.