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  #1  
Old 06-05-2010, 12:47 PM
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Default OBD can't connect, 2001 TT

Hello,


I have a 2001 Audi TT Quattro. For some reason the OBD reader cannot connect to the car, so no pass on emission test

Here's some information and stuff I tried:
- the car has the original BOSE radio working, and station info is displayed on the dashboard
- engine check light is not on, and I can run the diagnostics from the dashboard, which prints OK at the end
- I checked all the fuses on the side panel
- I cleaned the OBD connector with contact cleaner
- tried 3 different OBD readers (emission test computer, handheld OBD reader at shop, and I have a simple OBD reader), they all error out
- I checked the K-line voltage between pins 4+7, reads 0.18 volts
- I do not have a VAG-COM
- the car was not driven for over a year (due to new babies in the house), the battery was dead so I replaced it

What else can I do to diagnose/fix this problem? I've seen some posts suggesting cleaning radio/HVAC connections.

A mechanic suggested that some cars need to go through certain number of startup/warmup cycles before the OBD works, not sure if that applies.

Should I get a VAG-COM?


Thanks so much,
-lajos
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  #2  
Old 08-03-2010, 10:19 AM
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i have same problem, too. im thinking its about wiring... but i dunno how can i check it..
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  #3  
Old 08-30-2010, 09:13 PM
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Did either of you have luck with this issue? I have having the exact same problem/symptoms.
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  #4  
Old 08-31-2010, 09:33 AM
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I still have no solution. I got a vag-com, which can't connect to the car either.
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  #5  
Old 09-01-2010, 07:28 AM
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i found problem maybe your problem is same, too..
i had a superchips on my car and i cannot connect to car with superchips..
now i changed my eprom and put different one, now i can connect in a second
im sooo happy... do u have something like this on car ?
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  #6  
Old 09-02-2010, 09:47 AM
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Well, I'm not the first owner of the car, so it's possibility. Although this car has passed inspection since I got it (they need to connect to obd for smog), so I'm afraid I have a different issue.

But I'll check for superchip. Thanks for the tip!
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  #7  
Old 04-01-2012, 06:50 PM
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I assume by now you have resolved this issue or sold your vehicle :-) What did you find out.
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  #8  
Old 04-02-2012, 09:56 AM
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Join Date: Jul 2010
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Check your wiring on the OBD connector. I believe I had a wire/pin that was loose in the connector. You might want to use a continuity tester/wand for this.
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2000, a4, a6, audi, car, communicate, connect, emissions, engine, line, obd, odb, scanner, tt, vagcom


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