P2D6DBattery Charging System Positive Contactor D Control Circuit Range/Performance
- Generic OBD-II code · Powertrain
- How the car detects it
- P2D6D points to a coil circuit of positive charging contactor D that works but behaves implausibly: current or voltage on the line drifts out of its normal window although no open or short is present. No manufacturer documents P2D6D publicly, and GM's published tables contain no such range test for charge contactors. A GM patent explains what the coil current can reveal: the position of the armature shapes the current response, so a contactor that is fully or partly closed draws a recognisably different curve, judged by its derivative and integral against a stored reference. CARB expects monitored hybrid outputs to answer commands properly. Contact resistance and a sluggish armature fit this code. P2D6C, P2D6E and P2D6F cover open, low and high.
- What you may notice
- Charging via contactor D interrupted sporadically
- Contactor pulls in late or chatters
- Code returns after clearing
- Likely causes
- LikelyRaised contact resistance in the coil circuit
- PossibleSluggish or partly jammed armature in contactor D
- RareAgeing output stage delivering too little current
- 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.