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2004 Audi TT 3.2 TTR OBDII port will not communicate

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Old Jun 20, 2016 | 07:43 PM
  #1  
EighTT's Avatar
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Default 2004 Audi TT 3.2 TTR OBDII port will not communicate

Hey guys, got a problem and wondering if anyone has a suggestion.

I have a 2004 Audi TT 3.2 Roadster. The OBDII port cannot communicate with any scanner. All fuses have been checked and appear to be fine. There is power to the OBDII port, but no communications and again, 5 scanners have the same problem, so it's not a scanner issue.

I've read that there are problems with the K line and modules connected along that line. No idea if there's occurring or not. I did have 2 check engine lights on, but I don't think they're directly related, as OBDII worked fine for some time while the CEL was on.

One mechanic I know wants to try and refresh the ECU. Another says he doubts it's ECU-related.

Any thoughts or suggestions would be appreciated.
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Old Jun 21, 2016 | 09:12 AM
  #2  
bertible's Avatar
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Do you have an aftermarket radio? If so, you might want to carry out the Ross-tech test at Ross-Tech: VCDS: Afterrmarket Radio Problem


Good Luck
Gary
2000 225 Quattro Coupe



Originally Posted by EighTT
Hey guys, got a problem and wondering if anyone has a suggestion.

I have a 2004 Audi TT 3.2 Roadster. The OBDII port cannot communicate with any scanner. All fuses have been checked and appear to be fine. There is power to the OBDII port, but no communications and again, 5 scanners have the same problem, so it's not a scanner issue.

I've read that there are problems with the K line and modules connected along that line. No idea if there's occurring or not. I did have 2 check engine lights on, but I don't think they're directly related, as OBDII worked fine for some time while the CEL was on.

One mechanic I know wants to try and refresh the ECU. Another says he doubts it's ECU-related.

Any thoughts or suggestions would be appreciated.
Reply
Old Jun 21, 2016 | 05:58 PM
  #3  
randomid123's Avatar
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Joined: Mar 2016
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I think I read about this before, and the person in that situation disconnected the battery, and it fixed the issue.
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