Charge Air Cooler Coolant Pump B Underspeed
Charge air cooler coolant pump B reports a underspeed condition. CAC coolant loop circulation is impaired.
Affected components
- Cac coolant pump b
- Wiring harness
- Ecm
Common causes
- High likelihood: Mechanical load increased
- Medium likelihood: Supply voltage low under load
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.