Code P0411, “secondary air injector incorrect flow”?

Yep, this will be the air injection check valve, these will rust and stop working, or the air pump or air pump relay/fuse itself. Here is the fuse and relay location so you can check those out and how to remove the valve and pump, the valve you should only be able to blow through one way if not it is bad and the pump motor you should be able to put 12 volts to see if it works.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Clear the codes after the repair. Check out the images (below). Please let us know what happens.