P0087 Fuel Rail/System Pressure - Too Low
Fuel pressure measured in the rail is lower than the engine computer expects. Common on direct-injection and diesel engines.
Common causes
- Clogged fuel filter
- Weak low-pressure fuel pump
- Faulty high-pressure pump or pressure regulator
- Fuel leak
- Faulty rail pressure sensor
Symptoms
- Check engine light
- Loss of power or limp mode
- Hard starting
- Stalling under load
What to check
- Check fuel filter service interval
- Measure low-side fuel pressure
- Compare rail pressure desired vs actual
- Look for leaks
Manufacturers may add their own detail to generic codes. If your vehicle shows a different description for P0087, follow the service information for that make and model.