Transmission

What is your question?

I have a 2015 Nissan Sentra with 28000 miles. I recently took the car to the dealership because my check engine light is one. The day after, the adviser texts me and say that Nissan is recommending replacing the cvt assembly (transmission). It is covered under warranty. Can you tell me what that means and if I should let it happen? I’m worried that it will cause problems along the line. Thank you so much for any input.

What makes this problem better or worse?

I never noticed an issue with the vehicle, I simply took it in to be inspected because the check engine light came on.