Why is my Heater blowing cold air out of passenger side of nissan rogue 2017

That sounds exactly like the very common stripped out blend door problem on those Nissan Rogues. The 2014 to 2020 Rogues and all the Nissan Rogue Sports have that problem. It can be $3,000 to fix it at the dealer with the same faulty parts. There is a company that has a patented permanent repair for that problem that's much cheaper. renegadesolutionscompany.com