Diesel Intake Air Flow A Control Circuit/Open
The drive circuit for the diesel intake air-flow control valve A is open. This valve (also called intake throttle, swirl flap actuator, or anti-shudder valve) closes the diesel intake to control airflow during regeneration and shutdown.
Affected components
- Diesel intake throttle
- Diesel intake throttle actuator
Common causes
- High likelihood: Actuator winding open
- Medium likelihood: Open wire to actuator
- Low likelihood: Pin pushed back out of connector body
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.