P2E51Battery Charger Coupler Temperature Sensor D Circuit Low
- Generic OBD-II code · Powertrain
- How the car detects it
- P2E51 reports a sensor D voltage below the valid band. TE Connectivity lists thermistors, thermocouples and resistance temperature detectors as candidate elements for inlet sensing (US10960781), and the patent also explains the stakes: contact resistance heats the inlet at high current and could melt parts or start a fire if nobody watches. With an NTC thermistor a low signal suggests a contact far too hot to be real; with a resistance detector such as a PT1000 it suggests a pin colder than the climate allows. Either way the most common physical cause is a short to ground or moisture across the sensor leads. The only public trace of a sensor D is Ford's SSM 55080 on P2E53 for three of its electric models; P2E51 itself appears in no maker's published documents. High signal is P2E52, real overheating P2E53.
- What you may notice
- DC fast charging refused
- Charging warning message
- Inlet temperature reading implausible in live data
- Likely causes
- LikelySensor D signal wire shorted to ground
- PossibleMoisture or corrosion in the inlet harness connector
- PossibleTemperature element D shorted internally
- RareMeasuring input of the evaluating module defective
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.