P0D9ABattery Charger Coupler Temperature Sensor A Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Needs a drive cycle to confirm a fix
- How the car detects it
- P0D9A covers a coupler temperature signal that is electrically valid but does not make sense, for example a rise that the charging current cannot explain or a value that disagrees with the rest of the system. GM's preliminary information PIT5904 lists it, with P298C and P0E5F, for the 2022 GMC Hummer EV and BrightDrop EV600: the MIL comes on and charging fails or aborts, often at heavily used public or dealer stations. GM suspects software or oversized and damaged terminals in the cable plug, advises clearing codes and trying another station, and notes that the test only re-runs after about 10 minutes of driving above 2 mph. Mercedes stores it as P0D9A97 (sensor malfunction) in the smart's 22 kW charger. Unlike P0D99, a worn station plug can trigger it on a healthy car; true overheating is P0E5F.
- What you may notice
- MIL on (GM)
- Charging fails or stops, often at busy public stations
- Code returns only after a drive of about 10 minutes (GM)
- Likely causes
- LikelyOversized or damaged terminals in the charging station plug (GM)
- PossibleCharging software calibration, update pending or available (GM)
- PossibleRaised contact resistance at the vehicle inlet pins
- RareTemperature element drifting out of its characteristic
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.