Q: I just got a P0087 code on my Mercedes.

asked by on

I just got a P0087 code on my mercedes. It has been having issue in the morning until it warmed up with it not seeming to have power, but once it heated up it was fine. Then the check engine light came on and it reads the fuel rail system is low. Could this be just a fuel filter?

My car has 177000 miles.
My car has an automatic transmission.

Hi there. A fuel filter can cause a restriction in the fuel line if the filter is plugged up. If you are getting a P0087 code for fuel pressure rail is low, then put a fuel pressure tester on the fuel rail and check for the pressure. Check for pressures with the engine off and key on, engine on at idle, and engine on at 2000 rpm. If the pressure is 35 psi or higher, then there is no problem with the fuel pressure and the fuel pressure sensor has failed. If the pressure is low, then the fuel pump could not be working, fuel filter could be plugged up, or the fuel pressure regulator on the rail could have failed. If you need further assistance troubleshooting the fuel system, then seek out a technician, such as one from Your Mechanic, that can assist you with your vehicle.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. I just got a P0087 code on my Mercedes.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Engine running rough and light now on.

Yes you could have bad fuel in the system if that is the case. However, you may want to check and make sure your fuel filter is good, and make sure there are no extra leaks in the the air...

Q: Rich run, bad start, sometimes white smoke

The white smoke is a bit worrisome - usually an indicator of a blown headgasket, which will also cause rough running, especially at low speeds from a compression imbalance. The throttle position sensor may also be sending "off" signals to...

Q: How to fix an oil leak?

The proper way to repair an oil leak would depend on where the engine is leaking from. Common leak sources include the valve cover gaskets, oil pan gasket, rear main seal, intake manifold gasket, oil filter, and drain plug. The...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...