Powertrain Definition only Lights the check engine lamp

P2CB5: Charge Air Cooler Coolant Pump B Control Module Overtemperature

Standardized SAE J2012 code · P2Cxx codes

What does P2CB5 mean?

Charge air cooler coolant pump B reports a control module overtemperature 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 Ambient temperature too high
  • Medium Module cooling path blocked

Likelihood is a general estimate across vehicles; your make and model may differ.

Add your car to see reports of P2CB5 on the same make and model first.

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