05 Pathfinder Evap Cntrl Diag Help!
 

So here is my situation, I have a 05 Pathfinder which came in with codes PO447 Evap Vent Cntrl Open and PO463 Fuel Level cicuit "A" high input. Doing some research on Mitchell I determined that possible causes for Evap code was wiring, connection or Evap vent cntrl valve. So I replaced the valve with a gut shot that it would fix it.My OTC Genisysis wasmissing the nesssary chip to activate the valve manually. I really didn't know where to go with the Fuel level input issue. Well as I figured it came back in a hurry both codes. According to the evapwiring diagramit seemed liketwo circuits were seperate from each otheruntil the ECM.So do I have two seperate issues or one issue triggering two codes ect. ?Has anybody run into this situation and could give my some pointers.