The Nissan Path

I just bought a 2002 Pathfinder for my daughter, 124K miles, perfect condition. As soon as it was home the check engine light came on and I pulled OBD codes P0011 and P0021. Before I jump into this is there any obvious advise I should receive? I was going to change the oil just because, it's pretty clean but I would like to start fresh.

Thanks

I think this can help you :
http://forums.nicoclub.com/help-2003-pa ... 14207.html

So I am having th same codes pop up.The link to the video is gone so no help there.What are the solenoids or sensors you replaced?I am in desperate need of getting this vehicle running as I am going out of tow"wifes vehicle".I will also change the filter and new oil as well.Any help would greatly be appreciated.