I have a P0420 code on a 2010 Honda Accord V6. I'm not sure if its the O2 Sensor or the Converter though I've been reading reviews on Amazon that a product called Cataclean works. Autozone has a sale going on with that product and willing to try it but I want some inputs beforehand! I rather pay 20 bucks for something than 900+ for a new converter!
Read more: Have anyone tried Mr. Gasket Cataclean to clean their catalytic converter? (P0420)?