My Nissan Versa is showing this code P1421 this code is not listed for my car

Question

The P1421 code is showing as catalyst damage what does this mean exactly?

Answer 1

Yes it is.

https://www.autocodes.com/p1421_nissan.html

There is also a a factory service bulletin for that problem. The bulletin suggest reprogramming the Engine Control Module (ECM) to repair the problem.