Powertrain
Definition only
Lights the check engine lamp
P2CB4: Charge Air Cooler Coolant Pump B Supply Voltage Circuit
Standardized SAE J2012 code · P2Cxx codes
What does P2CB4 mean?
Charge air cooler coolant pump B reports a supply voltage circuit condition. CAC coolant loop circulation is impaired.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Common causes
- High Supply fuse blown
- Medium Wiring or connector fault
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2CB4 on the same make and model first.
P2CB4 in the community
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