Finally got off my lazy ass and work on the 402 problem. Took the valve off and give it a good soaking with some solvant. Used a small screw driver do open and close the valve a bunch of time while soaking and it seems a bit more free now.
Put it back in and so far so good, no more code. Fingers closed it would last a while so I don't have spend 200 bucks on a valve.
Also after many trips to the deserts I finally took the air filter out of the can and shook some fine dust out. Guess about time to change it but not really that bad. The snorkel with pre cleaner really works!!! No real build up of dirt in the big can and basically nothing beside a few small leaves in the tuna can. Dorkel for the win! And chicks dig it too!
