LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1572 (6.7L Diesel - DTCS P0402 To P0653 - 2500 Hd) >> DTC Troubleshooting >> P0403- EGR Control Circuit/Open >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2017 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
POSSIBLE CAUSES
EGR CONTROL 1 CIRCUIT OPEN/HIGH RESISTANCE
EGR CONTROL 2 CIRCUIT OPEN/HIGH RESISTANCE
EGR CONTROL 3 CIRCUIT OPEN/HIGH RESISTANCE
EGR VALVE
POWERTRAIN CONTROL MODULE (PCM)

Always Perform The PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE Before Proceeding. Refer To  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .