DTC B1503-31: Bank 'C' Motor #1 Speed/Position Sensor - No signal: 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.

Refer to the electrical circuit diagrams and check the front seat cushion tilt motor position sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness or install a new front seat cushion tilt motor as necessary