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Home >> Fiat >> 2014 >> 500L Easy, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (DTCS P0218-00 To P1CBF-00 - C635 DDCT Automatic Transmission - 500L) >> Diagnosis And Testing >> P125D-Door Switch Performance >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
CCN DTC(S) SET
(T121) TRANSMISSION WAKE UP CIRCUIT OPEN
(T121) TRANSMISSION WAKE UP CIRCUIT SHORTED TO GROUND
(T121) TRANSMISSION WAKE UP CIRCUIT SHORTED TO VOLTAGE
TRANSMISSION CONTROL MODULE

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  STANDARD PROCEDURE  . 

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