evaporative system

What is your question?

my check engine light stays on the only monitor that is coming up is the evap system. I have had it to the garage and had the evap system checked and there is no leaks. I had the valve changed and everything. I cant get it to pass inspection in ny because of this. one of the garages I went to told me they had the exact vehicle and had the same problem and they put all kinds of money into it and still couldnt get fixed. I have put over $1400 dollars into it so far it runs like new but no one knows why its doing this. is there any recalls I should know about or can you give me an idea of what I need to do. I dont want to get rid of it I love it but I cant keep paying to fix unneccesary things