hi

i recently had my check enegine light come on
check the code and p0446 come up

i've been reading and it seems like it might be my gas cap
but when i open the cap to fill up i get a hissing noise like a lot of air coming out

i'll check my vents later today
it there anything eles i can do with out droping the tank

thanks

Pulsar

Inspect your vent lines throughly for cracks and small holes.