DTC U1145: <HBA>Lost Communication With Body Control Module

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:

High beam assist module does not receive data from body integrated unit.

NOTE:

Check if the customize setting is correct.
Perform the diagnosis for LAN system. Ref. to LAN SYSTEM (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE