P2D6D code meaning
Battery Charging System Positive Contactor D Control Circuit Range/Performance
What P2D6D means
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.
P2D6D at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyWorkshop only
- Typical labor1 to 5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2D6D
- Charging via contactor D interrupted sporadically
- Contactor pulls in late or chatters
- Code returns after clearing
Common causes of P2D6D
- Most likelyRaised contact resistance in the coil circuit
- PossibleSluggish or partly jammed armature in contactor D
- Less likelyAgeing output stage delivering too little current
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Bcs pos contactor dWiring harnessBms
What each part of P2D6D means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 6D | The exact fault in that area. |
What to do next
- Note P2D6D and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2D6D
What does P2D6D mean?
P2D6D means "Battery Charging System Positive Contactor D Control Circuit Range/Performance". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with P2D6D?
P2D6D does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will P2D6D fail an emissions test?
P2D6D is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P2D6D to fix?
Difficulty: workshop only. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will P2D6D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.