DTC P0089-4B: Fuel Pressure Regulator 1 Performance - Over temperature: Action
WARNING: This page is about a different car, the 2018 Land Rover Range Rover, 2017 Land Rover Range Rover, and 2016 Land Rover Range Rover. However, it is still accessible from the selected car via links, so may be relevant.
- Diagnosis of this DTC may require using the Jaguar Land Rover approved diagnostic equipment to check datalogger signals:
- 0x03C3 Fuel Pressure Relief Control Valve Duty Cycle - %
- Refer to the appropriate system wiring diagram and check the fuel pressure control valve circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Check and install a new fuel pressure control valve as required
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest