2010 altima 2.5L came in with a Check engine light on and DTC P0420 catalytic efficiency below threshold bank 1. Very simple to diagnose (see end of video)… Added Voice over.

This video is showing how to Change the Catalytic converter on a 2007 to 2012 Nissan Altima with a 2.5L 4 cylinder.

It is usually Very loud in the shop so there won’t be any vocal direction. Trying things a little differently on this video. If you prefer at least a voice over please leave your comments and suggestions down below.

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