P2BCE code meaning
Battery Charging System Negative Contactor B Control Circuit/Open
What P2BCE means
P2BCE watches the coil drive of negative charging contactor B for an open line or a driver whose real state differs from its command. No manufacturer documents P2BCE publicly. The closest published test is GM's P0D11 for minus contactor A in the Volt and the ELR: an output above 4 V with the driver off, a voltage close to supply, or a coil current under 57 mA with the driver on all count as faults, and the status of the charging high-voltage interlock belongs to the enable conditions; GM rates it Type A. CARB makes such charging-circuit checks mandatory for plug-in models. Broken wires near the battery, pushed-back terminals and an open coil top the list. Range/performance, low and high are P2BCF–P2BD1, the plus side P2BC7. Without its return contactor that charging mode is lost.
P2BCE 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 P2BCE
- Charging via the contactor B path not possible
- Charging fault indication
Common causes of P2BCE
- Most likelyControl wire or terminal of negative contactor B open
- PossibleCoil of negative contactor B open
- Less likelyDriver stage in the module defective
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Bcs neg contactor bWiring harnessBms
What each part of P2BCE means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| B | Area: hybrid propulsion. |
| CE | The exact fault in that area. |
What to do next
- Note P2BCE 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 P2BCE
What does P2BCE mean?
P2BCE means "Battery Charging System Negative Contactor B Control Circuit/Open". P2BCE watches the coil drive of negative charging contactor B for an open line or a driver whose real state differs from its command. It is a generic code, so it means the same on every make.
Is it safe to drive with P2BCE?
P2BCE does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will P2BCE fail an emissions test?
P2BCE 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 P2BCE to fix?
Difficulty: workshop only. A typical repair takes 1 to 5 hours of work. This is a job for a workshop.
Will P2BCE clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.