DTC P18A4-11: Motion/Position Sensor Power Circuit - Circuit short to ground: Action

Refer to the electrical circuit diagrams and check the rear drive unit pump position sensor power circuit for short circuit to ground
Using the Jaguar Land Rover approved diagnostic equipment, reconfigure the all wheel drive control module with the latest level software
Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest. If the fault persists, install a new all wheel drive control module.
For additional information, refer to: DIFFERENTIAL CONTROL MODULE (Removal and Installation).