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16618 fault code

Discussion in 'A3/S3/Sportback (8P Chassis)' started by vw754, Oct 22, 2011.

  1. vw754
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    vw754 vorsprung Durch Technik

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    [Oct 22, 2011]
    16618: Boost Pressure Regulation: Limit Exceeded (Overboost Condition) no lights come on in the dash,car go's very slow...cant get it to go over 80mph.........only does it in higher gears on A roads etc.........if i boot it local its ok.

    N75 has been making a whirring noise for about a month now.
    #1
  2. paddy
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    paddy Audi=No fault code, no idea

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    [Oct 22, 2011]
    this is what Rosstech say

    [h=4]Possible Symptoms[/h]
    • Malfunction Indicator Light (MIL) ON
    • Boost Pressure too high
    • Reduced Power Output
    [h=4]Possible Causes[/h]
    • Hoses incorrectly connected, disconnected, blocked or leaking
    • Boost Pressure Control Valve (N75) faulty
    • Boost Pressure Sensor (G13) faulty
    • Turbo Charger stuck/faulty
    [h=4]Possible Solutions[/h]
    • Check Charge Pressure Control System
      • Perform Output Test (to check the Turbo Charger)
      • Perform Basic Setting (to check the Charge Pressure Control)
      • Perform Pressure Test to locate Leaks
    • Check/Replace Boost Pressure Control Valve (N75)
    • Check/Replace Boost Pressure Sensor (G13)
    • Check/Replace Turbo Charger
    Category: Fault Codes

    #2
  3. vw754
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    vw754 vorsprung Durch Technik

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    [Oct 22, 2011]
    Perform Basic Setting (to check the Charge Pressure Control) any ideas on how to?
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  4. vw754
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    vw754 vorsprung Durch Technik

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    [Oct 22, 2011]
    would a faulty n75 cause a underboost or overboost?
    #4
  5. vw754
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    vw754 vorsprung Durch Technik

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    [Oct 23, 2011]
    BUMP !!!!!!!!!!! i disconnected n75 via all the pipes re-connected...............cars ok now !:think:
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