Mechanics/BodyShop that uses VCDS in MD?

Greetings All,

I was recommended to look for a body shop, mechanic, etc..that uses the VCDS scanning tool in my area. Apparently that tool is really good at looking at a particular problem I have on my 2015 Volkswagen GTI DSG.

Currently the 3 shops that I have already taken it too can not find the code that relates to the error message I get randomly. 

The error is...Error Service: leave vehicle only when selector in position: P

This happens to be a problem with the gear shift assembly. And I'm hoping that if I get a print out from the mechanic, I can take it to the dealership to have them fix it under their warranty.

My area: Gaithersburg, Maryland 20878

Thanks a bunch!