Vehicle is a 2005 lexus gx470 with around 41,000 miles. I had this cel light pop up after some gas attendant in NJ over fill the tank by hammering the pump. I figured it was some gas cap issues and reset it last year and then ran the car some and I passed state inspections. I realized sometime after it was some other problem and figured as long as I can pass its okay. This year however I am having trouble as I can get all but 2 monitors to ok before the cel comes back on. It comes on the following morning or few hours after the car is shut off. I cannot figure out what the code is for exactly. I know it has something to do with the purge control valve. The air monitor of the emission part last year must have been fine in order for me to pass. Does anyone have any idea on how to fix the problem or drive cyle to get the air part ready? p1445 Also how does the evap monitor check run is it setup on some time schedule after car is shut of. Anyway I can bypass that check?