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Home >> Fiat >> 2020 >> 124 Spider Classica, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 ((Aw6R31 Automatic Transmission Control Module (TCM) - Electrical Diagnostics)) >> Diagnosis And Testing >> U0074-00-Dedicated Powertrain D-Pt Can Bus Off >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
OPEN OR SHORTED DEDICATED CAN2 BUS CIRCUIT
POWERTRAIN CONTROL MODULE (PCM)
TRANSMISSION CONTROL MODULE (TCM)

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

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