DTC P0597-4B: Thermostat Heater Control Circuit Open - Over temperature: Action
- Vehicle Conditions to enable DTC Logging Strategy
- Ignition On, engine running
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Refer to the appropriate system wiring diagrams and check the coolant thermostat heater circuit for
- Short circuit to ground
- Short circuit to power
- Open circuit
- High resistance
- Check and install a new coolant thermostat heater, only when diagnosed as failed
- Using the Jaguar Land Rover approved diagnostic equipment, clear all stored DTCs and retest