DTC B1C90-14: Auxiliary Driving Lamps Relay - Circuit short to ground or open: 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 hardwired driving lamps circuit output from the body control module that can be used for aftermarket/accessory fitting. The circuit is not used on the standard vehicle, but required for aftermarket fitments.

Refer to the appropriate system wiring diagrams and check the auxiliary driving lamps relay circuit for short circuit to ground, open circuit, high resistance. Repair the wiring harness or install a new auxiliary driving lamps relay as necessary