Where is the EVAP canister vent control valve located on a 2009 Nissan Maxima?

Thanks. I already checked the gas cap and even went to AutoZone for a diagnosis. That's what they came up with. Also is removing the rear stabilizer bar clamps necessary? The service doc says to but I was wondering if I really had to to replace?

Go ahead and remove them per the service manual. You will find that most times taking a shortcut will end up taking more time. Be cautious when interpreting trouble codes. Sure, it could be the part that identified the issue reading incorrectly, or the part could be working fine. The job of sensors is not to tell you they went bad, it is to tell you when there is a problem with the emissions control systems. Scanning is only the first step to diagnosis, but maybe you get lucky and that is the problem.

EXACTLY!