Hey guys, good to be back to the forum. Been out of comission for a while with a busted ankle. Well anyway my truck threw the P 441 evap emissions code (again) The first time it through it i checked the gas cap and reset it. Second time i bought i new gas cap and reset it. Now its on again. And this is all within 1200 miles. So i've come to the conclusion its not my gas cap. Where else can i look to get this problem solved? Anyone had a similar problem and fix it?

 

Bad 02 sensor could be the culprit

 

it didnt throw and o2 sensor code...

 

You dont have to.The 02 can trick the PCM.Giving false codes and all along it can be that.Get the codes pulled with a better scanner and see if it cant trace it down better.The code your pulling is a universal OBDII generic code.Basically the Comp doesnt know what to pinpoint either

 

Probably a cracked vacuum line in the evaporation system.