P0D5AProximity Detection Circuit A Intermittent/Erratic
- Generic OBD-II code · Powertrain
- How the car detects it
- P0D5A points to a proximity signal on circuit A that flips between states or jumps erratically, so the vehicle sees the plug come and go although nobody touched it. No manufacturer documents P0D5A publicly. The function itself is laid down in SAE J1772: the plug-present contact tells the car when a connector is seated and when its latch button is pressed, which lets it stop drawing current before disconnection. An unstable signal can therefore cause charging to abort without reason or a drive lock that appears and vanishes. Mercedes' smart bulletin for the 22 kW charger shows the typical background: loose low-voltage contacts that act up only when parts are warm or cold. Hard faults are P0D58 and P0D59.
- What you may notice
- Charging aborts sporadically
- Plug status message appears and disappears
- Occasional refusal to drive off
- Likely causes
- LikelyLoose contact in the inlet or at the charger connector
- PossibleWorn latch switch or contacts in the charging plug
- RareMoisture in the charge inlet
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.