P0D9FBattery Charger A Coupler Lock Position Sensor Circuit Range/Performance
- Generic OBD-II code · Powertrain
- How the car detects it
- P0D9F covers a lock position signal that is electrically in range but does not fit the situation: the pin is reported in a position the actuator was not told to reach, or it gets there too late. The sensing principle in GM patent US8936482B2 works on pin travel, so a jammed or worn mechanism shows up here as well as a drifting sensor. Mercedes names the code for the third-generation smart electric drive with 22 kW charger built before 25 March 2013. Bulletin LI54.10-P-067823 lists P0D9F00 (position sensor of the cable lock faulty) among sporadic interlock faults: the car will not start and shows a plugged-in cable, or the battery will not charge. The cause was loose low-voltage contacts on the charger; technicians gently move each plug and wait up to 5 s for charging to begin. Hard circuit faults are P0D9E, P0DA0 and P0DA1.
- What you may notice
- Vehicle will not start and reports a connected charging cable (smart)
- High-voltage battery does not charge
- Fault may appear only at the start or end of charging, with cold or warm parts
- Likely causes
- LikelyLoose low-voltage contacts at the 22 kW on-board charger (smart)
- PossibleLock mechanism sluggish from ice, dirt or a worn gear train
- RarePosition sensor in the actuator drifting or misaligned
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.