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Home >> Jeep >> 2009 >> Liberty Sport, 4WD, Part Time >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Powertrain Control Module (Pcm) - Electrical Diagnostics - 42RLE Automatic Transmission >> DTC Troubleshooting >> P0604-Internal Control Module Ram >> Possible Causes

Possible Causes

Possible Causes 
PCM - INTERNAL ERROR

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See  DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure  

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