DTC P1935-86: Brake Switch/Sensor Signal - Signal invalid: Action
- Using JLR approved diagnostic equipment, perform a CAN network integrity test. Refer to the appropriate system wiring diagram and check the high speed CAN bus (powertrain) circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Using JLR approved diagnostic equipment, check the engine control module for related DTCs and refer to the relevant DTC index