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  1. #1
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    Help needded with 2.0 FSI A3 2003

    Whilst driving on the motorway at 70 my car seemed to misfire and loose total power so i pulled over to the hard shoulder and even when revving the car in neutral there was no power it was almost like a limp mode. i switched the engine off and waited 5 mins and the car was back to normal for about 5 mins and then it happened again.

    so i got the car home and scanned it with VAGCOM and a whole host of errors:

    6 Faults Found
    18104 - Powertrain Data Bus: Implausible Message from Steering Column Controller
    P1696 - 002 - Lower Limit Exceeded - Intermittent
    16395 - Bank 1: Camshaft A (Intake): Retard Setpoint not Reached (Over-Advanced)
    P0011 - 008 - Implausible Signal - Intermittent
    16814 - Catalyst System; Bank 2: Efficiency Below Threshold
    P0430 - 002 - Lower Limit Exceeded - Intermittent
    17443 - Sensor for NOx (G295): Signal Implausible
    P1035 - 008 - Implausible Signal
    16575 - Fuel Pressure Sensor (G247): Implausible Signal
    P0191 - 002 - Lower Limit Exceeded - Intermittent
    18974 - Low Pressure Fuel Sensor (G410): Short to Plus
    P2542 - 001 - Upper Limit Exceeded - Intermittent
    Readiness: 0000 0000

    I have cleared these errors and the car seems to be ok but there is now one error which won't go off which is:

    1 Fault Found
    17439 - Intake Manifold Tuning Valve (N316): Setpoint Not Reached
    P1031 - 004 - No Signal/Communication - Intermittent
    Readiness: 1110 0101

    so i have now opened my intake manifold and its pictured below: it doesn't look like its closing properly but its not seized i have cleaned it up and replaced it for now.




    would this have caused the problem? i also took out my spark plugs and they looked like this:



    Would it be safe to say that i need a new intake manifold flap motor? i have also noticed that when i rev the car while driving or in neutral i get a sort of zzzzzz noise i noticed this noise also when i was on the motorway. it gets louder web i accelerate or rev the engine..

    Please can anyone advise?

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  3. #2
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    its pretty sooty surely? I dont think my throttle flap is like that, i'm not sure about plugs as i'm only soon due my 1st set of new plugs in November.

    It could need realigned:

    Throttle Body Alignment (TBA) - Ross-Tech Wiki)
    2003-2008 1998 Red A3 8L 1.8 Sport
    2008 -> 2003 Akoya Silver A3 8P1 2.0 FSi Sport

  4. #3
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    The inside is very dirty but the outside (first pic) is clean I would have thought the inside would be dirty?? Thanks for your input will read up on that

  5. #4
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    Is the default position of the flap open or closed?

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    I can't do a TBA as I need to have no error codes to do so and my car chucked out the error

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    anyone???

  8. #7
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    You could try disconnecting the battery for 30 mins & then try clearing the fault again. We had this on a Saab whose battery had gone flat & jump starting it left the sensor out of position. It wouldn't clear using our lead so we disconnected battery & let the modules totally clear & restarted with a good 12V and it alighned itself properly this time.
    2003-2008 1998 Red A3 8L 1.8 Sport
    2008 -> 2003 Akoya Silver A3 8P1 2.0 FSi Sport

  9. #8
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    I will give that a try see if it works.. Thanks..

    I was thinking to open the intake manifold and checking the four flaps in there? What do you recon?

 

 

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