P0D0D code meaning
Battery Charging System Positive Contactor A Control Circuit High
What P0D0D means
P0D0D means the control line of positive charging contactor A sits too high, typically from a short to a supply voltage or a driver that no longer switches off. The coil may then stay energised, so the contactor could close without a command, which the module has to prevent. No manufacturer documents P0D0D publicly; on the Chevrolet Volt GM folds the short to power into P0D0A and flags it when the off-state output stays within 0.4 V of supply. CARB requires plug-in vehicles to monitor charging components. Causes are crossed or chafed wiring and a failed driver inside the control module. Low readings are P0D0C, opens P0D0A, a welded contactor P0D08. The system normally blocks charging until the fault is gone.
P0D0D 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 P0D0D
- Charging blocked
- Charging or high-voltage system warning
Common causes of P0D0D
- Most likelyControl wire shorted to a supply voltage
- PossibleDriver stage in the control module stuck on
- Less likelyOpen ground return of the coil letting the line float high
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Bcs pos contactor aWiring harnessBms
What each part of P0D0D means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 0D | The exact fault in that area. |
What to do next
- Note P0D0D 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 P0D0D
What does P0D0D mean?
P0D0D means "Battery Charging System Positive Contactor A Control Circuit High". P0D0D means the control line of positive charging contactor A sits too high, typically from a short to a supply voltage or a driver that no longer switches off. It is a generic code, so it means the same on every make.
Is it safe to drive with P0D0D?
P0D0D does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will P0D0D fail an emissions test?
P0D0D 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 P0D0D to fix?
Difficulty: workshop only. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will P0D0D clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.