DTC B1C43-23: Master Interior Light Switch - Signal stuck low: 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 firstly run the engine for 120 seconds and check the interior light switch function, 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 interior lamp switch signal circuit for short circuit to ground. Repair the wiring harness as necessary
- Check the operation of the interior lamp switch. Install a new interior lamp as necessary