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Home >> Jeep >> 2017 >> Wrangler Sahara, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 107 (2.4L - DTCS P0633 To P1457) >> DTC Troubleshooting >> P0633-Skim Secret Key Not Stored In Pcm >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
SECRET KEY CODE FAILED TO TRANSFER TO THE PCM
HIGH OR LOW BATTERY VOLTAGE
NO COMMUNICATION WITH BODY CONTROL MODULE (BCM)
POWERTRAIN CONTROL MODULE (PCM)

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

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