Diesel Intake Air Flow A Control Stuck Closed
Diesel intake throttle A is mechanically stuck closed — engine starves of intake air.
Affected components
- Diesel intake throttle
Common causes
- High likelihood: Carbon buildup holds flap closed
- Low likelihood: Carbon or debris buildup preventing free movement
- Low likelihood: Component wear with age - mechanical play
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- 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.