2011 Edge Limited 3.5. w/140,000 miles:
I'm getting error code P0430 (Bank 2) and P0420 (Bank 1).
I don't have a fancy scanner to read the actual sensors so I took it to Autozone to read. (I don't prefer to go there but my only option).
Right off the bat, he says, "It's your Cat". I was wondering if I'm tossing away money by trying to replace the cheaper parts (O2 sensors) first to see if that cures the problem. I can clear out the codes with my low end scanner and it says off for a while. Sometimes only the P0430 comes back without the P0420.
What is your thoughts?