P27E5Electric/Auxiliary Transmission Fluid Pump Control Valve Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P27E5 sets when the voltage on the auxiliary pump control valve line is pulled toward ground, typically by chafed insulation touching the case or by a coil shorted internally. No manufacturer documents the code openly. For orientation: in Volkswagen's 8-speed 09P and 0GC transmissions the electric pump V475 keeps pressure while the engine is stopped, and a regulator-driven valve routes its flow; a grounded drive line would leave that valve in its spring position. CARB 13 CCR 1968.2 requires circuit monitoring for such outputs. The controller usually switches the output off to protect its driver. P27E6 is the opposite fault, a short to supply; P27E3 an open. Check the harness where it passes brackets or the oil pan.
- What you may notice
- Stop-start switched off
- MIL lit
- Likely causes
- LikelyControl line chafed through and touching ground
- PossibleValve coil shorted internally
- RareFluid or water in the connector bridging to ground
- 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: €60 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.