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Home >> Jeep >> 2019 >> Compass High Altitude, FWD >> Repair and Diagnosis >> Engine Performance >> System >> 2.4L - DTCS P0601 To P104B >> DTC Troubleshooting >> P0633-Skim Secret Key Not Stored In Pcm >> Possible Causes

Possible Causes

Possible Causes
PCM WAS REPLACED AND THE "PCM REPLACED" ROUTINE HAS NOT BEEN RUN
DEFAULT SECRET KEY VALUE WAS RECORDED IN THE WCM/WIN DUE TO DTC BEING ERASED BEFORE THE "WCM/WIN REPLACED" ROUTINE WAS RUN

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

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