Turbocharger Boost Control A Temperature Too High
The boost control actuator A reports excessive operating temperature - typically heat soak from the turbo housing, prolonged high-load operation, or insufficient cooling. Boost is derated to protect the actuator electronics.
Affected components
- Turbocharger a actuator
Common causes
- High likelihood: Heat soak from turbo housing
Possible symptoms
- Charge status indicator shows fault
- Charging may not start or interrupts
- Slower-than-expected charge rate
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
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.