P0087 Fuel Rail/System Pressure - Too Low
What does P0087 mean?
P0087 — Fuel Rail/System Pressure - Too Low. This is an OBD-II diagnostic trouble code a scanner retrieves when your vehicle's computer detects fuel rail/system pressure - too low. The level of risk depends on how the vehicle is currently running and how long you've been driving with the light on.
Common causes of P0087
- Clogged or failing fuel filter or pump
- Faulty fuel pressure regulator
- Leaking fuel line or injector seal
- Restricted fuel supply from the tank
- Failed high-pressure pump on direct-injection engines
How to fix P0087
- Check fuel pressure with a gauge at the rail and at idle vs load
- Inspect fuel filter and lines for restrictions or leaks
- Test the fuel pump delivery rate and pressure
- Check the low-pressure and high-pressure sides on DI engines
- Replace the failing pump, regulator, or filter and re-verify pressure