DTC P0087-84 Fuel Rail/System Pressure - Too Low Bank 1 - Signal below allowable range: Action
WARNING: This page is about a different variant/trim than selected.
NOTE:
Do NOT replace the powertrain control module for this Diagnostic Trouble Code(s), unless the powertrain control module connector pins are damaged or corroded.
- Check powertrain control module for fuel pressure related Diagnostic Trouble Code(s) and refer to relevant Diagnostic Trouble Code(s) 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 Injector 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 fuel lines for restrictions and repair as required
- Check fuel lines for leakage and repair as required
- Check fuel injector for stuck open/leaking and repair as required
- If a new fuel injector is installed. Using the Jaguar Land Rover approved diagnostic equipment, reprogram the injector codes
- Diagnosis of this Diagnostic Trouble Code(s) may require using the Jaguar Land Rover approved diagnostic equipment to check datalogger signals:
- 0x0324 Fuel Rail Pressure Sensor
- Refer to the appropriate system wiring diagrams 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 Diagnostic Trouble Code(s) and retest