DTC B103C-86: Left Headlamp Control - Signal invalid: Action
WARNING: This page is about a different car, the 2018 Land Rover Discovery and 2017 Land Rover Discovery. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
To validate the repair check all of the headlamp functions with the engine running, then use the Jaguar Land Rover approved diagnostic equipment to check this DTC is no longer logged within the body control module
- Refer to the electrical circuit diagrams and check the left headlamp assembly power and ground circuits for open circuit, high resistance. Repair the wiring harness as necessary
- Refer to the electrical circuit diagrams and check the headlamp LIN bus circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary