Thread: hard to fill up gas tank and P0446 code

hello, I've searched the forum a bit but still need some help.
when I bought my 2005 GTP a short while ago I noticed that its very hard to fill up the gas tank. the pump will shut off after a few seconds. the check engine light also came on with a P0446 Evap code. I already replaced the Vapor canister vent solenoid and that didn't fix my issue. im getting 12 volts with the key on at the vent solenoid wire harness, and when I apply 12 volts to the solenoid using a battery I can hear it open and close. however, once I plug the solenoid into the wire harness it does not open or close. could this be a pressure sensor?

I was hoping I could find a vent hose that might be clogged but I cant find one. please help.

I have not removed the canister. I think its located on top of the fuel tank right? I have not checked anything else, ive been waiting for some warm and dry weather

Oh. That also got changed. I was thinking of the charcoal canister

I checked a bit ago. It's dry. Doesn't even smell like gas fumes.

Yes I changed both. For some reason the solenoid doesn't open once installed. I can't hear it open or close when the key is turned off and on.

Originally Posted by khornocker

Yes I changed both. For some reason the solenoid doesn't open once installed. I can't hear it open or close when the key is turned off and on.

Have you tried to see if power is going to it by any chance?

Originally Posted by Zstrode2939

Have you tried to see if power is going to it by any chance?

Yes I'm getting 12 volts with the key on

hello. I have an update on my hard to fill gas tank issue...................its fixed!!!!!

it was the charcoal canister. this morning I dropped the gas tank and installed a new canister and whammy! I can now fill up my gas tank without cussing every 2 seconds.