read this first
http://www.justanswer.com/car/15t7y-...dtc-p0440.html

The EVAP canister is located in its' own little cubby behind the driver side rear tire. If you lay on your back at the rear corner of the driver side you will see it directly above.
Unfortunately I do not have access to a smoke machine nor do I have the fine troubleshooting skills and knowledge needed to directly correct this problem. So, taking the advice of the above link, I accessed the top of my fuel tank through the removable panel in the trunk and replaced the fuel tank pressure sensor. It was very easy. I cleared the code and will let everyone know if it cures my problem. The code always came back within a few days so after a week I'll update this post.

Please see attached images I have prepared for everyone.
MM

 

Mines constantly comes on don't know where to start lookin

 

Jack up your car at the driver side rear on the subframe. CAREFUL.. Remove the driver rear tire. Look at the upper left corner of the wheel well. You will see the fuel tank. Located on top of it is the vapor canister. It has three lines connected to it. (see attached images) Two lines are smaller and have connectors and the third one (on the right) is much larger with a squeeze clamp. If this line has blown off or is loose, this is your problem !!!!!! My guess is that at some time in this cars' past, the fuel tank was overfilled. This led to an over pressurization of the fuel tank which resulted in this line blowing off. It is a pain to put this thing back on. I had to pull it down and rotate the clamp so that when it was placed back on the port I could reach the clamp with pliers. It takes a little patience but I did it in less than a minute. I have been driving my car for the last two days without a code and my gas mileage is 32 Hwy and 29 city. WOW ! Please feel free to ask any questions. I'll be glad to help.

 

000000 I always used to fill up at 17 gallons. Now I do 16.5
This might be my issue

 

Nope that hose is connected

 

The method I used to find the leak was simple. I disconnected the hard plastic hose that runs to the back from the solenoid valve on top of the engine. (see image location) I then used my rubber tipped air hose and gently pressurized the fuel tank from that hose while having someone else listen from atop the tank after removing the fuel pump access plate in the trunk. All I did was listen and that was all it took. If the system has a leak this will find it. If the problem is a solenoid valve of course it will not. Solenoid valves can be tested by energizing the connections while blowing through one end. Be careful to use the right amount of voltage. If I remember correctly it was 5 volts? You can check all of the o-rings this way too. Good luck. I don't know a lot but I will try to help.
MM

 

Ahh that sux I don't have access to that. J might just jave to get a smoke test done

 

If you know anyone that has an air tank maybe you can borrow it. All it takes is a quiet area and a source of compressed air.

 

Yup looks like I have neither lol

 

hey still lookng to fixthis, any body know what a vent valve is located