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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 217 (6.7L - DTCS P0008 To P040D - 3500 Cab & Chassis) >> Diagnosis And Testing >> P0402-EGR Flow Excessive Detected >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2012 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
EXHAUST GAS PRESSURE SENSOR
EGR AIRFLOW THROTTLE CONTROL VALVE
EXHAUST SYSTEM LEAK
INTAKE SYSTEM LEAK
EGR VALVE

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE - 6.7L  . 

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