P0D0B code meaning
Battery Charging System Positive Contactor A Control Circuit Range/Performance
What P0D0B means
P0D0B reports that the control circuit of positive charging contactor A works electrically but does not behave plausibly – coil current or line voltage outside the window expected for the commanded state, or a response that comes too slowly. No manufacturer documents P0D0B publicly. The nearest documented test is GM's P0D0A on the Chevrolet Volt, which matches commanded and actual driver state and judges coil current, and CARB requires plug-in vehicles to check charging components for circuit and rationality faults. Typical triggers are contact resistance in connectors, a coil whose resistance has drifted, or a weakening driver stage. Opens are P0D0A, low and high signals P0D0C/P0D0D, mechanical sticking P0D08/P0D09. Charging may work only now and then or be refused.
P0D0B 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 P0D0B
- Charging sessions fail sporadically
- Stored code, possibly with a charging system warning
Common causes of P0D0B
- Most likelyContact resistance or corrosion in the control circuit connectors
- PossibleContactor coil with changed resistance
- Less likelyWeakening driver stage in the control module
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 P0D0B means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 0B | The exact fault in that area. |
What to do next
- Note P0D0B 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 P0D0B
What does P0D0B mean?
P0D0B means "Battery Charging System Positive Contactor A Control Circuit Range/Performance". P0D0B reports that the control circuit of positive charging contactor A works electrically but does not behave plausibly – coil current or line voltage outside the window expected for the commanded state, or a response that comes too slowly. It is a generic code, so it means the same on every make.
Is it safe to drive with P0D0B?
P0D0B does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will P0D0B fail an emissions test?
P0D0B 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 P0D0B to fix?
Difficulty: workshop only. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will P0D0B clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.