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fault codes help needed!

zornyan May 21, 2013

  1. zornyan

    zornyan New Member

    So on my other halfs aum 1.8t its had these 2 damm fault codes since buying it last year. 17705 air leak. And the other for sai incorrect flow

    So far i have replaced

    Hockey puck
    all the hoses under the inlet with silicone jobbies.
    Recirc valve
    Spark plugs
    All filters
    Cleaned the tb
    Blocked off n249 and used silicone hose so dv is mechanically controlled.

    Still same damm fault codes. Car pulls well low down but goes really flat above 4k

    Cant find any split pipes or loose connections

    Any suggestions or help is welcome as im at the end of my tether now!
  2. zornyan

    zornyan New Member

    Btw all the replacement parts were genuine audi not pattern. Also to add the rev counter moves about slightly at idle. If i disconnect the maf it stays steady.
  3. gen.heinz guderian

    gen.heinz guderian Well-Known Member

    What make was the recirc valve?
  4. Gops

    Gops Badger 5 Edition VCDS Map User Gold Supporter Audi S3

    17705/P1297/004759 - Pressure Drop between Turbo and Throttle Valve (check D.V.!)

    Possible Symptoms
    Malfunction Indicator Light (MIL) ON
    Power Loss
    Possible Causes
    Leaking Hoses and/or Pipes between Components
    Boost Pressure Control Valve (N249) faulty
    Diverter Valve faulty
    Throttle Body dirty
    Vacuum leak
    Possible Solutions
    Check Hoses and Pipes between Components
    Check / Replace Boost Pressure Control Valve (N249)
    Check / Replace Diverter Valve
    Check / Clean Throttle Body
    Perform Throttle Body Alignment (TBA)
    Check for Vacuum leak(s) including PCV system
    Special Notes
    Did anyone install an extra (wrong) dump valve?
    When found in the NAR 2.0T (BPY) check RVUTB: 01-09-03 or 2018919 for updated Crankcase Breather Valve
    If the breather valve is faulty, full engine vacuum is typically found when removing the oil cap at idle.
    When found in the 3B B5/B5.5 Passat 1.8T, check the PCV "bleeder valve" for example part number 06B-103-245
    One way to troubleshoot the problem is to pinch closed the vent hose under the coolant bottle, that attaches to the bleeder valve and see if the idle smooths out.
  5. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator Audi S3

    This is a known software bug in some ECU's... normally gets mapped out by decent tuners...

  6. zornyan

    zornyan New Member

    Recirc was a new gen audi item from the dealer.

    Gops the 2 engines in the notes arent related to.my aum are they?

    Struggling to find a cause
  7. zornyan

    zornyan New Member

    Well she wants it remapped and so do i. Just wanted to get the new silicone tip and cat back exhaust fitted before getting it mapped at amd.

    They suggested they may be able to code out the sai so im going to remove it and fit a resister first. Just want to make sure theres no pressure drop before the map to make the most of it.
  8. zornyan

    zornyan New Member

    Bump for anymore suggestions

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