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Home >> Fiat >> 2016 >> 500 Turbo, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 25 (1.4L 16-Valve - DTCS P0354-00 To P1021-00 - 500) >> DTC Troubleshooting >> P0633-00-Skim Secret Key Not Stored In Pcm >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
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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