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Home › Jeep › 2021 › Cherokee Altitude, FWD › Repair and Diagnosis (Single Page) › Engine Performance › System › 2.4L - DTCS P0602 To P1047 › DTC Troubleshooting › P0602-Control Module Programming Error/Not Programmed › Possible Causes

Possible Causes

Possible Causes
PCM INTERNAL FAILURE

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .