DTC P0597-4B: Thermostat Heater Control Circuit/Open - Over temperature: Action
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Refer to the appropriate system wiring diagram and check coolant thermostat heater circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest
- Check and install a new coolant thermostat heater as required