Long time listener, first time caller. The ECU on my '03 RS6 does not send information to the Virginia emissions inspection machine.

It will initially connect and won't pass information on the second phase.

Tried a couple of different shops and it failed to communicate.
Took it to the independent shop with no luck.
At the dealer and the same situation.
There was another short thread from 2010 that had a similar issue and had the ECU reset at the dealer and it worked.
My dealer says they can't communicate with the ECU to reset it (??) and it needs a new one ~$2,600

It does have a GIAC tune from a previous owner ....

Thoughts from the collective? Thanks!