DTC P0850-64: Park/Neutral Switch Input Circuit - Signal plausibility failure: Action
- Refer to the electrical circuit diagrams and check the park neutral switch circuit between transmission control switch, body control module and powertrain control module for short circuit to ground, open circuit, high resistance
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Using the Jaguar Land Rover approved diagnostic equipment, clear the Diagnostic Trouble Code(s) and retest