P2D65Battery Charging System Negative Contactor C Control Circuit/Open
- Generic OBD-II code · Powertrain
- How the car detects it
- P2D65 concerns the line that drives the coil of minus-side charging contactor C: the module notices that what it commands and what the line actually shows do not match, which usually means a broken wire, a loose terminal or an open coil. No manufacturer documents P2D65 publicly. The closest published test is GM's P0D11 for the minus charge contactor of the 2011 Volt: with the output off, more than 2 V on it counts as an open load, and the code needs 40 bad samples out of 50 taken every 12.5 ms (one trip, Type A); a short to ground stays invisible to that check. P2D5E is the plus-side twin, P2D73 the same fault on contactor D. The return pole of path C cannot be closed, so that charging mode drops out.
- What you may notice
- The charging mode routed through contactor C does not start
- Code is stored even without a charging request
- Charging fault message in the cluster
- Likely causes
- LikelyBroken coil-drive wire or terminal pushed out of the connector
- PossibleOpen winding in the coil of minus contactor C
- RareFaulty output stage in the controlling module
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.