DTC U0129: Lost Communication With Brake System Control Module
WARNING: This page is about a different car, the 2022 Subaru Crosstrek. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Refer to "LAN SYSTEM (DIAGNOSTICS)" for diagnostic procedure . Ref. to LAN SYSTEM (DIAGNOSTICS) (HEV)>BASIC DIAGNOSTIC PROCEDURE .