P2D6BBattery Charging System Positive Contactor D Stuck Open
- Generic OBD-II code · Powertrain
- How the car detects it
- P2D6B is logged when positive charging contactor D fails to close on command, leaving the plus pole of its charging path disconnected. No manufacturer documents P2D6B publicly. GM's Volt test for plus contactor A (P0D09) shows the usual principle: once charging and precharge are commanded on, the charger-side voltage has to climb, and the test fails when 8 of 9 samples, taken every 12.5 ms, stay below 10 V (Type A). The tricky part is attribution. CARB exempts failures that look identical whether the vehicle or the charging station is at fault, so the code is meant for faults that clearly lie inside the vehicle. Typical finds are pitted contacts, low coil voltage or a stuck armature. P2D6A is the welded case, P2D72 the minus side.
- What you may notice
- Charging in the affected mode never starts
- Charging station reports an immediate abort
- Driving unaffected
- Likely causes
- LikelyBurnt contacts or jammed armature in plus contactor D
- PossibleInsufficient coil supply voltage or poor ground
- RareModule software misjudging the voltage rise
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €150 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.