2004 hyundai failed emissions p0441

hello
I have a error code of p0441 and looked up the error online. Other than the gas cap I've read it's most likely the purge valve. Looking on my 3.5L engine after taking off the cover, is the part on the left back on the engine close to the fire wall being held with 1 10mm screw?

I took this part off and could blow air through it. I also used carb cleaner and wd40 but it still didn't help.

I guess my question is am I checking the correct part?

Thanks in Advance,

Dave