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Discussion in 'A4/S4 forum(B5 Chassis)' started by Honkers, Mar 6, 2010.

  1. Honkers
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    Honkers Member

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    Can anyone elaborate more and tell me is it a major problem. What do I need to remedy this?

    It came up with:-

    17965-Charge Pressure Control, positive deviation
    P1557-35-00

    Also, does anyone know how much a pair of original downpipes for an S4 B5 selling these days?

    Thks
    #1
  2. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator

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    It means your car is overboosting, mostly likely due to a boost leak.

    Get it sorted asap, or you could be looking at a bill for two new turbos
    #2
  3. Honkers
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    Honkers Member

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    Thks for the prompt reply
    I would like to change the DV's as well but what do i get? It's had a remap and am confused with 710N, n75, Forge and Baileys. what do I get and where?
    The DV's has been changed to Hyperboost and I don't mind spending more cash if its helps my problem as a piece of mind.
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  4. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator

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    If you already have hyperboost DV's fitted then you shouldnt need to change them, assuming they're not broken.

    N75 isnt a dump valve, its the electronic solenoid used to control boost pressure.

    You need to have a pressure test done on the car. Your profile says your abroad, so the usual guys in the UK probably cant help you, however all you need is a bung to replace the accordion hose, and a fitting for an airline, and a bung for the PCV valve, so its not too hard to put together yourself.

    You then pressurise the inlet to say 1.2bar, and trace any leaking hoses.
    #4
  5. Geeman
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    Geeman Low Life

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    I've got the reading 17964 on my 1.8T - and has the same description.

    New N75 valve has been put on, but no change to the code readings. Arse.
    #5

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