my check engine light is on reading OBD code P0420.

I am aware of what the code means and what the potential causes are however I am curious to know if anyone on the forums has experience this code and what they had to do to fix it.

any advice or helpful information would be greatly appreciated.

 

If you will use the 'search' function for threads with 'P0420' in the title you will get about 20 threads dealing with it.

 

Great advice, thank you.