P2BCB: The negative battery charge system contactor B has an electrical fault
The negative battery charge system contactor B has an electrical fault. It may be the part itself, its connector or the wiring.
| Code | P2BCB |
|---|---|
| System | Engine and transmission |
| Group | P2Bxx, Engine and emissions |
| Type | Generic: it means the same on every make |
How to read and clear P2BCB with Final OBD
Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see P2BCB with its description and whether it’s confirmed, pending or permanent.
If the engine stores it over standard OBD, with FREE you read this code with its explanation for nothing and clear it. With PRO you also read the faults of every control unit and clear them in all of them.
Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before an inspection. It’s all in how to read and clear fault codes and in inspections and OBD.
Similar codes
- P2BC7 The battery charge system positive contactor B control has a broken or
- P2BC8 The battery charge system positive contactor B control gives readings outside
- P2BC9 The battery charge system positive contactor B control gives a lower signal
- P2BCA The battery charge system positive contactor B control gives a higher signal
- P2BCC The negative battery charge system contactor B has got stuck
- P2BCD The negative battery charge system contactor B has got stuck
- P2BCE The battery charge system negative contactor B control has a broken or
- P2BCF The battery charge system negative contactor B control gives readings outside
- P2BAC NOx exceedance: EGR deactivated
What does code P2BCB mean?
The negative battery charge system contactor B has an electrical fault. It may be the part itself, its connector or the wiring.
How do you clear P2BCB?
With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, P2BCB comes back.
Read it on your car
Final OBD reads and clears engine faults through standard OBD for free, each one explained in plain English. With PRO it also reads the faults of every control unit, each make’s own codes included, and clears them in all of them.
