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cant connect to the ECU

Discussion in 'A3/S3 Forum (8L Chassis)' started by 1.8T_, Apr 13, 2013.

  1. 1.8T_
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    1.8T_ Member

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    [Apr 13, 2013]
    well suddenly my obd port is not working,
    when i connect the obd port to the pc i hear the sound that its connected but cant read .
    and the led function the controller not lighting also i tried two cables.
    #1
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  3. Vex182
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    Vex182 Guess what I drive...

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    [Apr 13, 2013]
    Have you checked behind the port to make sure it's all still connected alright?
    #2
  4. Scullies
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    Scullies Well-Known Member

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  5. 1.8T_
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    1.8T_ Member

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    [Apr 13, 2013]
    which fuse to check?
    #4
  6. 1.8T_
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    1.8T_ Member

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    [Apr 13, 2013]
    yes
    #5
  7. Scullies
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    Scullies Well-Known Member

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    [Apr 13, 2013]
    I can't remember off hand but it might be #10, something along the lines of engine management.
    Can you start the car?
    #6
  8. 1.8T_
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    1.8T_ Member

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    [Apr 13, 2013]
    yes the car starts fine all ok no problems,
    #7
  9. Lewis583
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    Lewis583 Active Member VCDS Map User

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    [Apr 13, 2013]
    As said fuse is the first place to check. Do you have an aftermarket radio fitted?

    I'm on my phone so don't have access to fuse diagram but there definitely is one.
    #8
  10. 1.8T_
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    1.8T_ Member

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    [Jun 24, 2013]
    I still cant fix this problem!!!
    I get this erros
    the problem started alone I didn't touch any wire or something it was work perfect
    yes I have aftermarket headunit but it did work smooth so its not the headunit
    any ideas ? maybe change the ecu? the car starts and drive like normal
    [​IMG]
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    #9
  11. epox
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    epox Active Member

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    [Jun 24, 2013]
    have you tried changing the com port? could be windows is using com port 1 for somthing else.
    #10
  12. badger5
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    badger5 www.badger5.co.uk Site Sponsor

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    [Jun 24, 2013]
    sound more pc than car
    #11
  13. 1.8T_
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    1.8T_ Member

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    [Jun 24, 2013]
    yes I did the com thing com 1
    the k line where it should be connecting?
    #12
  14. epox
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    epox Active Member

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    [Jun 24, 2013]
    Last edited: Jun 24, 2013
    #13
  15. @udi A3
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    @udi A3 Site Sponsor Site Sponsor VCDS Map User

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    [Jun 24, 2013]
    Just unplug from car and perform dongle check in the application
    #14
  16. 1.8T_
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    1.8T_ Member

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    [Jun 24, 2013]
    I did the com thing
    @udi a3 what do you mean?
    #15
  17. @udi A3
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    @udi A3 Site Sponsor Site Sponsor VCDS Map User

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    [Jun 24, 2013]
    When you first install vcds you perform a device test, have you tried re installing
    #16
  18. 1.8T_
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    1.8T_ Member

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    [Jun 24, 2013]
    Yes when i press test i get this error " port status ok . Interface not found"
    #17
  19. @udi A3
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    @udi A3 Site Sponsor Site Sponsor VCDS Map User

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    [Jun 24, 2013]
    Hmm buy genuine :)
    #18
    Audi Dynamik likes this.
  20. 1.8T_
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    [Jun 24, 2013]
    hmm is this a wire diagram for the obd port?
    #19
  21. basil brush
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    basil brush Active Member

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    [Jun 24, 2013]
    Try it on another VAG car !
    #20
  22. @udi A3
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    [Jun 24, 2013]
    I think your cheepo cable has failed on you try another cable or take it into a computer repair shop and see if they can check it out.
    #21
  23. 1.8T_
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    1.8T_ Member

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    [Jun 26, 2013]
    I tried to connect to other car seat Ibiza 2013 and its worked so the problem is with my car.
    #22
  24. @udi A3
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    @udi A3 Site Sponsor Site Sponsor VCDS Map User

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    [Jun 26, 2013]
    scrap it :D
    #23
  25. basil brush
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    basil brush Active Member

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    [Jun 26, 2013]
    That makes me the winner , what's my prize ?
    :D
    #24
  26. 1.8T_
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    1.8T_ Member

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    [Jun 26, 2013]
    I did the k line test and its fine not the k line im take it to the garage I hope the can fix it.
    #25
  27. 1.8T_
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    [Jul 5, 2013]
    an update
    i just tried anther something
    i disconnected the battery for about 3-4 hours and reconnect . and its work nowwww :jump::w00t:
    #26

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