P27E3Electric/Auxiliary Transmission Fluid Pump Control Valve Circuit/Open
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- The control valve named here decides where the oil from the electric auxiliary pump goes. Volkswagen's training book for the 0GC seven-speed DSG shows such a layout: pressure regulator N218 shifts a spring-loaded changeover piston that sends the flow of pump V475 either to the mechatronic unit or to clutch cooling. No maker publishes P27E3 itself. The code reports that the valve's drive circuit is broken or so resistive that the module measures no proper current: a cut wire, a lifted pin or an open coil. Without the valve the pump flow can end up in the wrong branch, so stop-start or cooling support may be dropped. P27E5 and P27E6 cover shorts, P27E4 a valve that responds wrongly.
- What you may notice
- Stop-start unavailable
- Warning light with stored open-circuit fault
- Likely causes
- LikelyBroken conductor in the valve control line
- PossiblePin backed out or corroded at the gearbox connector
- PossibleValve coil burnt open
- 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.