DTC P1935-86: Brake Switch/Sensor Signal - Signal invalid: Action

NOTE: No repair actions relating to the transmission or transmission control module will rectify this fault.

Prioritised steps to perform:
Using the Jaguar Land Rover approved diagnostic equipment, check the vehicle for CAN bus (FlexRay) related Diagnostic Trouble Code(s) and refer to the relevant DTC index
Refer to the appropriate system wiring diagrams and check the high speed CAN bus (FlexRay) circuit for short circuit to ground, short circuit to power, open circuit, high resistance
Using the Jaguar Land Rover approved diagnostic equipment, check the powertrain control module for related Diagnostic Trouble Code(s) and refer to the relevant DTC index