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Home › Jeep › 2007 › Liberty Limited, 4WD, Part Time › Repair and Diagnosis › Transmission › Transmission Control Systems › 42RLE Automatic Transmission - Electrical Diagnostics › Automatic Transmission 42RLE - Electrical Diagnostics › DTC Troubleshooting › P0602-Control Module Programming Error/Not Programmed › Possible Causes

Possible Causes

Possible Causes
PCM - PROGRAMMING ERROR

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. See 42RLE PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .