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Thread: P1020 High Pressure Fuel Fault Help

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  1. P1020 High Pressure Fuel Fault Help 
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    So this has been quite a long standing problem I have had on my 3.0TDI, but it has recently become undrivable! When under load (used to be full throttle now it is most of the time) I get a flashing coil light. If I do a scan, the fault I get is “Fuel Pressure Regulation Control limit exceeded Upper limit exceeded”. I have already replaced the high fuel pressure sensor on the LH rail and the high fuel pressure regulator on the RH rail.

    I know there is a flow metering valve on the back of the HPFP, so this is going to be my next target as it is the only thing left that hasn’t been replaced. This is getting expensive though, so wondered if anyone has seen a similar fault and how they fixed it?

    I have attached a scan below, and will try and make a data log when it happens.
    Date: 2018-10-06 13:20

    VIN: WAUZZZ8E55A506018
    Car: Audi A4
    Year: 2005
    Body type: Avant
    Engine: BKN 150 kW (204 HP) 3.0 l
    Mileage: 269190 KM

    ---------------------------------------------------------------
    01 Engine

    System description: 3.0L V6TDI G000AG
    Software number: 8E0910401F
    Software version: 0060
    Hardware number: 8E0907401AJ
    Coding: 0011171

    Trouble codes:
    P1020 - Fuel Pressure Regulation Control limit exceeded Upper limit exceeded
    static


    ---------------------------------------------------------------
     
    0 0 0
     

  2. Re: P1020 High Pressure Fuel Fault Help 
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    Did the flow metering valve fix it ?
    Current cars:
    2007 Passat b6 2.0 tdi BMR DSG
    2011 Golf MK6 1.6 tdi CAYC 5 speed
     
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  3. P1020 High Pressure Fuel Fault Help 
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    Not got a new one yet, I have been away. I managed to pull the HPFP out on Monday as you have to remove it to get to the valve (much to my dismay as I had just put all the bumper back on, and to get the HPFP out it all has to come off to the service position)

    I’m going to give it a good clean out and test tomorrow. If not it appears to be about £100 for a replacement.

    I assume you have similar symptoms then, not a solution?
     
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  4. Re: P1020 High Pressure Fuel Fault Help 
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    No, never had to go further then rail pressure regulator valve, so interesting to see.
    Good luck !
    Current cars:
    2007 Passat b6 2.0 tdi BMR DSG
    2011 Golf MK6 1.6 tdi CAYC 5 speed
     
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  5. Re: P1020 High Pressure Fuel Fault Help 
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    Quote Originally Posted by Renars View Post
    No, never had to go further then rail pressure regulator valve, so interesting to see.
    Good luck !
    Did you have to do adaptions after replacing it or was it just plug and play?
     
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  6. Re: P1020 High Pressure Fuel Fault Help 
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    I think it was plug and play !
    Current cars:
    2007 Passat b6 2.0 tdi BMR DSG
    2011 Golf MK6 1.6 tdi CAYC 5 speed
     
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