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Limp Mode - TDI - 17965 P1557

Discussion in 'A3/S3 Forum (8L Chassis)' started by AUDI 130BHP TDI SPORT, Aug 27, 2008.

  1. AUDI 130BHP TDI SPORT
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    AUDI 130BHP TDI SPORT DOLPHIN GREY

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    [Aug 27, 2008]
    Hi -

    My car has developed a fault of the dreaded limp mode, had it put on diagnostics and it reads 17965 - P1557 - Charge pressure control Regulating limit surpassed.

    I've had the MAF replaced, and the top Turbo Intercooler pipe replaced, but still get this fault.

    Limp mode only really happens when i exceed 3500 rpm, sooner if driving on a hill.

    Don't think it's the turbo, as I have been driving with this fault since early this year, and the fault has not gone any worser/better.

    Any ideas?
    #1
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  3. MikeA3
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    MikeA3 Active Member VCDS Map User

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    [Aug 27, 2008]
    17965/P1557/005463 - Charge Pressure Control: Positive Deviation

    Possible Symptoms

    • Reduced power output
    • Limp mode
    Possible Causes

    • Boost Pressure too High
    • Hoses/Pipes incorrect connected, disconnected, blocked or leaking
    • Charger Pressure Control defective
      • VNT (variable nozzle turbo): nozzles stuck
    • Solenoid Valve for Boost Pressure Control (N75) defective
    Possible Solutions

    • Check Hoses/Pipes to/between Components
    • Check Solenoid Valve for Boost Pressure Control (N75)
    • Check / Clean / Replace Charge Pressure Control
      • Check / Clean mechanism for variable nozzles
    Retrieved from "http://wiki.ross-tech.com/index.php/17965/P1557/005463"

    hope it helps

    Mike
    #2
  4. Essflee
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    Essflee Well-Known Member

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    [Aug 27, 2008]
    have you looked on the ross tech web site....? gives you the symptoms and possible causes/solutions.....I did have a quick look, you'll have to search the code to bring it up if you haven't already......
    #3
  5. Essflee
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    Essflee Well-Known Member

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    [Aug 27, 2008]
    Beat me to it !!!!
    #4

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