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loads of faults all of a sudden

Discussion in 'A3/S3 Forum (8L Chassis)' started by s3gazz, Jan 2, 2011.

  1. s3gazz
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    s3gazz Well-Known Member

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    [Jan 2, 2011]
    hi any help please

    tuck car in for mot two days ago and it failed on emmisions so put car
    on vag com yesterday and all these popped up god nose whats coursed them all.

    00526 brake light switch
    17705 pressure drop between turbo and throttle valve
    17833 evap valve - short to ground
    17525 lambda sensor heating circuit - short to ground
    17861 exhaust gas temp sensor - open or short to plus
    16486 massair flow sensor - signal too low
    17523 lambda sensor heating - short to ground
    17511 lambda sensor heating - performance too low
    17522 lambda sensor internal resistance too high
    :(
    #1
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  3. hades-
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    hades- Yorkshire & Humber Rep. Regional Rep VCDS Map User

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    [Jan 2, 2011]
    clear them all
    go for a drive and see what comes back some could be old
    #2
  4. murran
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    murran Active Member

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    [Jan 2, 2011]
    17522 lambda sensor internal resistance too high.....

    looks like you need a lambda sensor to me.
    #3
  5. gavin89
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    gavin89 Wana go Low gotta go Slow

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    [Jan 2, 2011]
    And that fact that he failed an emmisions test doubles that point!

    Brake light is an easy and cheap one to fix, the electrical shorts might be temperary, give it a scan when engine is normal op temp.
    #4
  6. s3gazz
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    s3gazz Well-Known Member

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    [Jan 2, 2011]
    sorry forgot to mention i cleared the faults after and then they come back
    with all the lambda faults could it not be a fuse or something or one fault triggerz them all cheers
    #5
  7. s3gazz
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    s3gazz Well-Known Member

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    [Jan 9, 2011]
    got these two faults as well people what do they mean

    01314 engine control module
    18057 powertrain data bus missing message from abs controller
    17705 pressure drop between turbo and throttle valve

    cheers for any help
    #6
  8. superkarl
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    superkarl MAN OF STEEL

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    [Jan 9, 2011]
    17705 - boost leak?

    Lambda and egt sensor fault explains emissions fail.
    Need new maf
    Dunno what evap valve is.

    And abs controller and brake switch will be responsible for ESP problem.

    I'd sort cheapest first. And inspect them all to see if hardware is ok
    #7
  9. s3gazz
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    s3gazz Well-Known Member

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    [Jan 9, 2011]
    thanks very much mate great help notice car is alot slower now aswel ill get brake light switch tomoz
    hopefully that stops that one then have to be my lambda sensor on manifold as changed the other one
    yesterday drinks like i fish mate ha

    iv checked car through and cannot find a leak anywhere had water and wasing up liquid on all pipes and nothing

    maf changed that and nothing changed so put oldone back on
    #8
  10. superkarl
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    superkarl MAN OF STEEL

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    [Jan 9, 2011]
    Yeh it will be down on power as fueling will be all over show.
    Mine drinks like a fish too, not good.
    New maf didn't erase that fault? I dunno wat else it would be.
    #9
  11. superkarl
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    superkarl MAN OF STEEL

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    [Jan 9, 2011]
    Try the Intercooler pipes for the pressure drop. And the dv and pipes to and from it.
    #10
  12. s3gazz
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    s3gazz Well-Known Member

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    [Jan 9, 2011]
    well all pipes will all be get checked again next week end when i mess about with car as i do eery saturday

    flipping fuel e new maf it is then tar karl
    #11

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