DTC U0073: Control Module Communication Bus Off

WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.

DTC detecting condition:

When all the following conditions are met.

Battery voltage stays at 10 V or more for longer than one second.
CAN bus is not in sleep state.
Buss off state detected by ISO11898 compliant CAN function is found.

NOTE:

Perform the diagnosis for LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE