DTC P0087-22: Fuel Rail/System Pressure - Too Low Bank 1 - Signal amplitude > maximum: Action
NOTE:
- Do NOT replace the powertrain control module for this DTC, unless the powertrain control module connector pins are damaged or corroded.
- Operational requirements needed to allow the monitor to be fully tested. Drive the vehicle over 3 drive cycles (engine on/off) across varied driving conditions including high torque to confirm the repair
- Check powertrain control module for fuel pressure related DTCs and refer to relevant DTC index
- Using the Jaguar Land Rover approved diagnostic equipment, measure the fuel pressure drop across the fuel filter (2 measurement points)
- Measure point 1 (Input side of the fuel filter) Install 0 - 14 Bar pressure gauge between Fuel Supply to Fuel Filter Pipe and Fuel filter
- Engine at idle expected fuel pressure 7 psi (0.5 bar)
- Engine at 3000 RPM expected fuel pressure 7 psi (0.5 bar)
- Measure point 2 (Output side of the fuel filter) Install 0 - 14 Bar pressure gauge between Fuel filter and Fuel Filter to High Pressure Diesel njector Pump Pipe
- Engine at idle expected fuel pressure 7 psi (0.5 bar)
- Engine at 3000 RPM expected fuel pressure 7 psi (0.5 bar)
- Fuel filter is blocked or starting to block if fuel pressure (output side of the fuel filter) is lower than fuel pressure (input side of the fuel filter)
- Install a new fuel filter, only when diagnosed as blocked
- Check low pressure fuel system for leaks or blockage
- Refer to the electrical circuit diagrams and check the fuel rail pressure sensor 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
- Install a new fuel rail pressure sensor, only when diagnosed as failed
- Using the Jaguar Land Rover approved diagnostic equipment, clear the DTCs and retest