Powertrain
Definition only
Lights the check engine lamp
P2BCD: Battery Charging System Negative Contactor B Stuck Open
Standardized SAE J2012 code · P2Bxx codes
What does P2BCD mean?
The negative contactor B of the battery charging system reports a stuck open condition. HV charging path cannot be commanded reliably.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Contactor contacts oxidised - high resistance
- Medium Contactor coil burned out
- Low Carbon or debris buildup preventing free movement
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2BCD on the same make and model first.
P2BCD in the community
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