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Home >> Alfa Romeo >> 2019 >> Giulia Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> (Radio Frequency Module (RF Hub) - Electrical Diagnostics) >> DTC Troubleshooting >> B1033-64 - Operational Mode Status 1 - Signal Plausibility Failure >> Possible Causes

Possible Causes

Possible Causes
FUSED B(+) CIRCUIT OPEN OR SHORTED
GROUND CIRCUIT OPEN
CONTROL AREA NETWORK (CAN) C BUS CIRCUIT(S) OPEN/HIGH RESISTANCE
RADIO FREQUENCY HUB (RF HUB) MODULE

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