My CEL just popped up and I pulled up 3 codes. 0304, 0705 and 0903. I checked out what they meant. I know that one of them is for the knock sensor, and I hear thats not that bad of a problem. But the other 2 I am totally lost. EVAP Canister Vent Control Valve and the EVAP Control System are the oter 2 codes. Can Anybody Help?

 

http://forums.maxima.org/showthread.php?threadid=235667

 

I already looked up what the codes meant. I was just wondering if anyone has encountered any similar problems and what they did to fix em.