P0087: Fuel Rail/System Pressure- Too Low
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  1. #1
    Tadpole
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    Default P0087: Fuel Rail/System Pressure- Too Low

    Good morning,
    Does anyone know what the most common cause of this issue is on a 2013 Peugeot 508 1.6 THP. There doesn't appear to be any obvious fuel leaks visually or can I smell any. It is mostly on a cold start. I clear the trouble code after warming up then it drives normally but can be a bit touchy.
    Thanks in advance for any assistance.

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  2. #2
    COL
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    I'm no expert but sounds like a fuel pump on its way out or could be the fuel pressure regulator.

    Probably the best form of diagnosis is to get the fuel pressure tested and see if it is in spec.
    Regards Col

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  3. #3
    sans witticism SLC206's Avatar
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    Most common fault is the HPFP (high pressure fuel pump) on the engine, or the lift pump in the tank.

    If it's only on a cold start, it could simply mean your battery is failing.
    Regards,

    Simon

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  4. #4
    Fellow Frogger! dmccurtayne's Avatar
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    Hp fuel pump is u/s check with a dealer may be covered

  5. #5
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    Hp pump they normally fail on cold start.

  6. #6
    Fellow Frogger! dmccurtayne's Avatar
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    And under load

  7. #7
    Tadpole
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    Thanks for your replies. Not the battery as it is a few months old and I have also had it tested for CCA and load. Replaced the HP fuel pump but still has the low fuel rail pressure. Is there an inline filter on this vehicle as I have done 160,000kms. If so where is it?

    Thanks again.

  8. #8
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    I've never looked for the inline filter in a large car with that engine, so here's a guess that may help: in the small cars it's just in front of the fuel tank on the driver's side.

  9. #9
    sans witticism SLC206's Avatar
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    Quote Originally Posted by Bathey View Post
    Thanks for your replies. Not the battery as it is a few months old and I have also had it tested for CCA and load. Replaced the HP fuel pump but still has the low fuel rail pressure. Is there an inline filter on this vehicle as I have done 160,000kms. If so where is it?
    An excellent question. I've never looked under a 508 either. Being an Australian-delivered petrol car, it's more than likely got a fuel filter. European market-delivered cars tend not to have them, so there will be precious little piccies online.

    On the 207 and 208 it's on the left, behind the tank. On the DS3 it's on the right between the tank and the wheel.

    Here's a pic of the 508, but it doesn't really help that much.

    P0087: Fuel Rail/System Pressure- Too Low-508petrolfilter.jpg
    Regards,

    Simon

    2018 308 GTi 2011 DS3 DSport
    ----
    2014 208 GTi 2007 207 GTi 2004 206 GTi180 2000 206 GTi 1995 306 XT

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  10. #10
    Fellow Frogger! dmccurtayne's Avatar
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    What was the part number of the part u replaced

  11. #11
    Fellow Frogger!
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    Hi,
    perhaps the the problem is the pressure sensor, and not the actual fuel pressure?
    Just chucking the idea out there - maybe I am reading it wrong, but it sounds like the car runs ok but is throwing the error message?

    Thanks
    Andy

  12. #12
    Tadpole
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    Thanks for your responses- I have removed the under body covers to look for the filter as shown in the posted pic by SLC 206 but no filter to be seen. I am sure there is one. As the car is up around the 160k I have also replaced both o2 sensors and spark plugs. The problem is still there. Misfires badly so it has been out of action for a couple of months now. I dread taking it to both local dealers as I have been burnt badly by them while the car was under warranty. Prefer to do my own work... Just takes a little longer and then I can share my finding with you all.

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