DTC B1058 Hummer
Relay Control Module lost communication with Door Multiplex Control Unit (door lock switch message)
Relay Control Module lost communication with Door Multiplex Control Unit (door lock switch message)
Description
Poor communication between Relay Control Module, and the Door Multiplex Control Unit. B-CAN communication line malfunction.
Cause and Solution
Perform relay control module input test
Blown fuse
Poor ground
Open or Short to ground
Faulty relay control module
Video Guide
Diagnostic Info
- DTC Code: B1058
- Brand: Hummer