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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 431 (Powertrain Control Module (Pcm) - Electrical Diagnostics - 68RFE Automatic Transmission - 2500 Hd & 3500) >> Diagnosis And Testing >> P0604-Internal Control Module Ram >> 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 
POWER OR GROUND CIRCUIT
POWERTRAIN CONTROL MODULE (PCM)

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

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