DTC U1A00-88: Private Communication Network - Bus off: Action

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 Land Rover Range Rover, 2017 Land Rover Range Rover, 2016 Land Rover Range Rover, 2015 Land Rover Range Rover, and 2014 Land Rover Range Rover. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

This DTC refers to a CAN bus communications failure, DO NOT replace the blind spot monitoring control module
To validate the repair, set the ignition to on and wait 30 seconds and check the DTC does not set

Refer to the appropriate system wiring diagrams and check the opposite side blind spot monitoring control module power and ground circuits for open circuit, high resistance
Using the Jaguar Land Rover approved diagnostic equipment, perform a CAN network integrity test. Refer to the appropriate system wiring diagrams and check the high speed CAN bus (comfort) circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary
Using the Jaguar Land Rover approved diagnostic equipment, re-configure the left and right blind spot monitoring control module with the latest level software. Clear the DTCs and retest