Charge Air Cooler Coolant Pump B Control Circuit Low
Charge air cooler coolant pump B reports a control circuit low condition. CAC coolant loop circulation is impaired.
Affected components
- Cac coolant pump b
- Wiring harness
- Ecm
Common causes
- High likelihood: Control wire shorted to ground
- Medium likelihood: Internal short in pump motor
- Low likelihood: Connector pins corroded - high contact resistance
Diagnostic notes
- The malfunction indicator lamp may illuminate
- Reduced-power or limp mode may occur
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.