P27E6Electric/Auxiliary Transmission Fluid Pump Control Valve Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P27E6 means the control valve circuit of the auxiliary pump reads higher than allowed, as if the line were tied to battery voltage. A wire rubbing against a live conductor in the same harness, or a driver stage that no longer switches off, are the classic triggers. The code is not documented by any manufacturer in public. As a model of the hardware, VW's 0GC and 09P training books describe an electric pump V475 whose oil is steered by a pressure-regulated changeover valve; a permanently energized drive would hold that valve in one position. CARB 13 CCR 1968.2 calls for detecting such shorts. Because the valve cannot be released, the module typically disables stop-start. Low is P27E5, open circuit P27E3.
- What you may notice
- Stop-start inoperative
- Warning light on, possibly further pump codes
- Likely causes
- LikelyControl line shorted to a supply wire in the harness
- PossibleCorrosion bridging adjacent pins in the connector
- RareOutput stage in the control module stuck on
- 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 – €1,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.