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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 435 (6.7L Diesel - DTCS P1209 To P2281 - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> P1478 Intake Air Diverter Valve Position Sensor Circuit Shorted To Battery >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
INTAKE AIR DIVERTER FEEDBACK CIRCUIT OPEN/HIGH RESISTANCE
INTAKE AIR DIVERTER FEEDBACK CIRCUIT SHORT TO VOLTAGE
INTAKE AIR DIVERTER VALVE
POWERTRAIN CONTROL MODULE (PCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  STANDARD PROCEDURE  . 

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