Powertrain
Definition only
Lights the check engine lamp
P2CB1: Charge Air Cooler Coolant Pump B Overspeed/Air In System
Standardized SAE J2012 code · P2Cxx codes
What does P2CB1 mean?
Charge air cooler coolant pump B reports a overspeed/air in system 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 Air pocket in coolant loop
- Medium Coolant level low
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2CB1 on the same make and model first.
P2CB1 in the community
Ask about P2CB1No one has posted about P2CB1 yet
Share your vehicle, the tool you used and what you tested — the first thread helps everyone who searches for this code.
Describe your P2CB1 problem