Trouble code p0440

[stinkyone]

My 96 jimmy is giving me trouble cod p0440 something with the evap system control malfunction or something. Does anyone know what it could be or what to look for.

[maxwedge]

Gas cap loose or not sealing is the first think to look for with this.

[stinkyone]

Just got a new when and its tight

[maxwedge]

Did you clear it and it came back, if so there is a leak somewhere in the evap system, this requires a smoke machine to track down.

[chromezeus]

I realize this is an old thread I'm digging up, but that's the point of the search bar right. I also have this code recurring on about a monthly basis, is it worth spending money on tracking it down or just keep clearing it?

[maxwedge]

If you do not have an emissions test in your state you could get away with it. But it could also be related to a potential fuel leak. When we are done here, I will have to close this thread.