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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 434 (6.7L Diesel - DTCS P0420 To P1208 - 2500 Hd & 3500 Hd) >> Diagnosis And Testing >> P046C-EGR Position Sensor Circuit Performance >> 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 
EGR CONTROL CIRCUITS OPEN/HIGH RESISTANCE
EGR POSITION SIGNAL CIRCUITS OPEN/HIGH RESISTANCE
BOOST PRESSURE SENSOR
EGR TEMPERATURE SENSOR
EGR VALVE SOOTED / STICKING
EGR VALVE
POWERTRAIN CONTROL MODULE (PCM)

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