[amidgeha]

Diesel Intake Air Flow Position Sensor Circuit

The Intake Air (IA) Valve is a normally open valve and is only operated during a DPF regeneration. The position of the IA valve is controlled by the Engine Control Module (ECM). The IA valve system uses a position sensor located within the valve assembly to monitor the position of the valve. The ECM sets the OBDII code when then Diesel Intake Air Flow Position Sensor is out of factory specifications.

Cause:
Faulty Diesel Intake Air Flow Position Sensor
Diesel Intake Air Flow Position Sensor harness is open or shorted
Diesel Intake Air Flow Position Sensor circuit poor electrical connection
Faulty Throttle Body Assembly
Faulty Engine Control Module (ECM)

Symptoms:
Check engine light