P240CEVAP System Leak Detection Pump Heater Control Circuit High
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P240C flags the heater circuit of the leak detection pump at the high end: VW's 2014 Golf and Touareg books set it when the heater current exceeds about 2.2-4 A, which points to a shorted element or a line touching battery voltage. Jaguar's JTB00436 for the XJ (X351) quotes both P240C-00 and P240C-85, the 85 suffix marking a signal above range, among faults from water or ice in the DMTL filter; Land Rover's SSM69118 lists P240C-85 and SSM71298 P240C-00, each leading to a DMTL pump swap when nothing else is found. Maserati names P240C on its DMTL engines too. P240A means no current flows at all, P240B a grounded line. Without heating, the leak test can suffer in cold and damp weather; the car itself drives normally.
- What you may notice
- Check engine light
- Other DMTL codes after frost or heavy rain
- Likely causes
- LikelyShorted heating element in the pump module, often after water ingress
- PossibleHeater control wire shorted to battery voltage
- RareFaulty heater output stage in the engine control module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €80 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.