CEL light pops on...OK checked the codes. first time around i get p0440 & p0446. ok cleared the codes. drove for a couple of days light didn't come back on. came back on got the same p0440 & po446, cleared again. drove for a couple of days BOOM light back on again. now im getting p0440 & po448. ok whats going on

P0440 Evaporative Emission Control System Malfunction
P0446 Evaporative Emission Control System Vent Control Circuit Malfunction
P0448 Evaporative Emission Control System Vent Control Circuit Shorted

ok the p0440 is if anything goes wrong. but the other 2 have me confused. should i replace the vent or should I check the wiring??? please HELP!!!!!!!!

 

Might be the eval canistor valve is gummed up. Take it out of the canister and give it a good lube with WD-40, make sure the valve moves properly, and put it back in. I'm sure there's a writeup and it's also in the FSM.

 

P0440 could be your gas cap not sealing properly.