DTC U0074: Control Module Communication Bus "Body-Can" 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 the IGN power supply voltage becomes equal to or larger than 10 V continuously for 1 second, CAN controller information bus-off continues for 0.5 seconds or more.
Trouble symptom:
The headlight High does not illuminate.
NOTE:
Perform the diagnosis for LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE