Engine code help

[Barracuda556]

Got a p0441 code for the evap system. My gas cap is tight and also checked the o ring on the cap and the light is still up. What are some other common things on these trucks that trigger this code?

 

[NYCruiser]

Could be anything in the evap system. There is a tank and some hoses. May need to smoke test it. There is info about it on google.

http://www.obd-codes.com/p0441