Powertrain
Definition only
Lights the check engine lamp
P2B6C: Coolant Pump D Overspeed/Air in System
Standardized SAE J2012 code · P2Bxx codes
What does P2B6C mean?
Coolant pump D reports a overspeed/air in system condition. Coolant circulation through the affected loop cannot be commanded reliably.
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 P2B6C on the same make and model first.
P2B6C in the community
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