Not just yours my friend. I've had nothing but issues with mine since I got it new. My coworker had to sell his after 3 years because of all the issues he has had. He now has a Ram with zero problems. I dont think it's just your car. Nissan in general is very low quality recently. I wish I knew this before I got it.
As for the codes. If you're still under warranty take it in. If not. I really hope it's nothing major. Maybe whoever fixed your pump can look into it and see if its related?