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Home >> Alfa Romeo >> 2017 >> Giulia Base, AWD >> Repair and Diagnosis >> General Information >> OEM General Information >> (Security Gateway Module (SGW) - Electrical Diagnostics) >> DTC Troubleshooting >> U0056-00-Can Ch Bus Off Performance >> Possible Causes
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Possible Causes

Possible Causes
OPEN OR SHORTED CAN CH BUS CIRCUIT
CAN CH RELATED MODULE
CAN CH RELATED SPLICE BLOCK
SECURITY GATEWAY MODULE (SGW)

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