I got the P0420 engine code on my 2007 Acura MDX. What is this code and how to fix it?

Question

I got the P0420 engine code on my 2007 Acura MDX 6 Cyl. What is this code and how to fix it?

Answer 1

P0420 Catalyst sytem below efficiency below threshold Bank 1

This is for the catalytic convertor which is used to control harmful emission emitted from motor vehicles. Checck your VIN status update from the Dealer about the Recall Campaign for a ECM update.TSB # 11-017

Answer 2

P0420 ACURA Code - Catalyst System Efficiency Below Threshold Bank 1
Read more: https://www.autocodes.com/p0420_acura.html