Charge Air Cooler Efficiency Below Threshold
Charge air cooler efficiency dropped below diagnostic threshold — intake air not cooled enough after compression. Risk of knock and loss of power.
Affected components
- Intercooler
- Cac coolant pump
Common causes
- High likelihood: Intercooler airflow blocked or core damaged
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
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.