Powertrain
Definition only
Lights the check engine lamp
P2BCA: Battery Charging System Positive Contactor B Control Circuit High
Standardized SAE J2012 code · P2Bxx codes
What does P2BCA mean?
The positive contactor B of the battery charging system reports a control circuit high 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 Control wire shorted to B+
- Medium Open contactor coil
- Low Connector pins corroded - high contact resistance
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2BCA on the same make and model first.
P2BCA in the community
Ask about P2BCANo one has posted about P2BCA yet
Share your vehicle, the tool you used and what you tested — the first thread helps everyone who searches for this code.
Describe your P2BCA problem