P2BCB
Battery Charging System Negative Contactor B Circuit
The negative contactor B of the battery charging system reports a circuit condition. HV charging path cannot be commanded reliably.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Contactor failedCommon
- Wiring or connector faultPossible
Parts involved
- Bcs Neg Contactor B
- Wiring Harness
- Bms
P2BCB is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.