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Second opinion on error codes needed

Discussion in 'VCDS (formerly VAG-COM) forum' started by Geoggy, Dec 1, 2005.

  1. Geoggy
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    Geoggy New Member

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    [Dec 1, 2005]
    Hi,

    I have a 2002 1.8T A3, 38000 miles.

    A local independent did a diagnostic recently and reported these error codes.

    17545
    17705

    His conclusion from this and after taking it for an "extended test drive" (although i found a shopping list on my passengar seat for a mcdonalds order when i picked the car up - hence ive totally lost faith in them) Is that its an early warning that the cylinder head gasket is on the way out and that I should run the car until any running problems occur, then bring it back to him with £400 - £600 in my back pocket for him to sort out.

    (by the way this is the 3rd time has has done thie diagnostic for me - same codes three times - took him till this go to diagnose head gasket. - thats 75 quid in diagnotics - and the check engine light came on again the next day and is still on)

    Can anyone advise if the above diagnosis sounds right?

    Oh and anyone want a big mac whilst im going? /ubbthreads/images/graemlins/mad.gif
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  3. madvw
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    madvw Active Member

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    [Dec 1, 2005]
    sounds like balls to me (alledgedly, blah blah blah ofc)...

    17705 - Pressure Drop between Turbo and Throttle
    17545 - Fuel Trim : Bank 1 ( add ) System too rich

    try lambda first, clear, then re-scan.
    #2
  4. madvw
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    madvw Active Member

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    [Dec 1, 2005]
    bit-o-further googling:

    VAG DTC 17545:
    - Check fuel pressure regulator and holding pressure.
    - Check quantity of fuel injected and check for leaks.
    - Check Evaporative Emission (EVAP) canister purge regulator valve -N80-
    (still personally reckon lambda)

    17705 - check DV and MAF

    Out of interest, what local independant are you using?
    #3
  5. Geoggy
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    Geoggy New Member

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    [Dec 1, 2005]
    sorry mate - should have said in forst post - im new to all this so no idea what "try lambda first, clear, then re-scan. " means

    sounds like i need to get a cable and vag-com freeware asap??

    wouldnt feel too comfortable naming names just yet mate - im new here and not sure who reads these pages.

    lets just say if theyve read the above they'll recognise the car. i am in the north west of england, so any recommendations locally would be welcome!

    EDIT : just been googling on this.

    Found this thread:

    http://www.briskoda.co.uk/forums/showthread.php?p=239049

    Its a bit old, and it relates to a Skoda, but they are the exact same two codes and replace of a "dump valve" sorted the problem.

    Is this a clue? Is there a technical bulletin 56 out there with the answer to my problems?
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  6. peteA3tdi
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    peteA3tdi Member

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    [Dec 1, 2005]
    17705 - Pressure Drop between Turbo and Throttle
    17545 - Fuel Trim : Bank 1 ( add ) System too rich

    sounds like an air leak to me and a new 'DV' may well fix it they are under £20 so worth a try do a search on DV's ect to see how to fit one
    #5

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