Im in Massachusetts and they will fail you here for an incomplete on the Evap monitor. I wasnt having any problems with that so I think its just a matter of going thru the right drive cycle.
I bought those Denso's a while back, 2 after-cat and 1 before-cat sensors so let me see if I can dig up where I bought them. When I saw the price of the after-cats was so low I bought 2. The pre-cat one was a little higher in price
As far as posting the solution, fixing stuff like cars is like dating but its not all about the chase !!!