P0441 Help?

I used an ELM327 to read codes with my BMW so when the check engine light came on my 2009 Prius I wanted to see what may be going on. It came back as a P0441. Going back to my BMW, it had a similar issue and changing the gas cap removed the code. So I purchased a new gas cap and lo and behold it didn't fit. Went to a different store and purchased another gas cap and again it didn't fit. Brought the cap inside the store and the gentleman who is familiar with Prius' said I had a filler neck and cap for a 2010 Prius. So now I have a new cap on but the code remains.

I have a PCV on hand and plan on replacing that in the coming week. I'm not for throwing parts at something in an attempt to fix but as I have the Carfax (looks like all work was done at a couple of dealerships) from purchasing this car about a month ago, I do not see where the PCV valve or spark plugs for that matter have been changed up to this point. Any recommendations on what I should be looking at with the P0441 code?

 

No idea why I would have a 2010 filler on this car. I wouldn't have known otherwise until I attempted to change the gas cap. The two I purchased both had a triangle thingy on them and neither one fit. The one which ended up being correct was threaded and for the 2010 model. The guy at the store said he had seen this before. The only reason why I did not doubt him was because my previous car, a 2002 BMW had a born on date of 9/2002 and shared parts with the 2003 model. The car has about 116,500 on her. Is Tech Stream only available through dealerships?

 

Can I ask why an "old" windows laptop?

 

and to double check, this is the 16 pin connection and not the 22 pin, correct?