DTC B1507-23: Digital Input Bank '1' Switch #1 - Signal stuck low: 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 may be induced by the driver operating the seat away switchpack forward switch for longer than 120 seconds.

Check the operation of the seat away switchpack forward switch. Free the stuck switch or install a new seat away switchpack as necessary