Diesel Intake Air Flow A Control Stuck Open

Check these first

• Intake air flap A jammed in the open position
• Carbon or debris holding the air flow A flap open
• Failed gear or linkage in the air flow A actuator
• Actuator losing its position reference and parking open
• Wiring fault preventing the ECM from closing air flow A

What to do next

1. Command the air flow A flap closed and watch it move
2. Inspect the flap and bore for carbon or debris
3. Check the air flow A actuator linkage for wear
4. Verify the air flow A position signal tracks the command
5. Replace the air flow A actuator if the flap will not move
6. Clear the code and retest

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