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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 433 (6.7L Diesel - DTCS P0008 To P040D - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> P0405-EGR Position Sensor Circuit Low >> 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 
5-VOLT SUPPLY VOLTAGE OPEN/HIGH RESISTANCE
SENSOR GROUND OPEN/HIGH RESISTANCE
EGR POSITION SIGNAL CIRCUITS SHORTED TO VOLTAGE
EGR POSITION SIGNAL CIRCUITS OPEN/HIGH RESISTANCE
EGR POSITION SIGNAL CIRCUITS SHORTED TO GROUND
EGR VALVE
POWERTRAIN CONTROL MODULE (PCM)

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