OBD Connector Issue

[Kunz, Bob]

Yes, the K line can get whacked the way Tony describes. Here is the page on ross-tech that you need.

http://www.ross-tech.com/vag-com/aftermarket-radio.html

At least in my county which does emissions tests, if some glitch occurs in connecting to the OBD II port, they do it the old fashioned way; actually go measure the HC, CO, NOx, and dilution ratios from the exhaust at idle and 2500 RPM :-). Go figure! I actually like to get that data since it's more telling than simply reading the readiness codes from the ECU.

--bob
'86 5Ks Avant
'02 TTQR
'06 GTI
'07 Q7 4.2P


<< Green toads from Mars made Tony Hoffman say... >>


First question is, is there an aftermarket stereo in the car? Ran into
that more than once on the later model German cars. The problem is in
the adapter between the stereo and the factory connector. Trace one of
the feed wires (blue, I think) and you will see where it goes to two
connectors. Cut it, and the problem vanishes. The connector
manufacturer did that so it would work for several cars.

Tony

On Fri, Mar 6, 2009 at 10:20 PM, mkb <mkb125 at yahoo.com> wrote:
>
> Ok Folks,
>
> First issue for me on the 99 A6 28q Avant.  Took it for an emissions test but the emissions guy was unable to get the analyzer to communicate with the OBD.  He suggested I take it to another station and try someone who is running a different analyzer.  So I did that and the tech there said that he sees a comm channel open between the analyzer and the car but nothing else.  Can't get a reading though.  I have access to a friends VAG-COM which I'll try hooking up tomorrow but was wondering if anyone had encountered such an issue before.
>
> Any BTDT out there?
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