NOX Sensor Problem

Hey guys,
For the last two days, my dashboard was showing engine light error, and when I checked I found out about the error P229f. I did some research and ended up on this blog https://xenons4u.co.uk/blog/p229f62-p229e-and-p2202-nox-sensor-error-codes-explained. It says, "I might need to change my Nox sensor."
Is there anyone who can confirm if that's the case or not.