My son has a '07 Corolla with the "check engine " issue I scanned the car and the P0420 Threshold bank 1 message came up I am hoping it is just a sensor. The after my son change the gas(which took a while cause he doesn't drive that much) The code went away. Then when he went to fill up the take ...the code came back. I am assuming that the gas he puts in the car was the issue. I was wondering if it is not the gasoline that he is using, would a catalytic clear work. Has anyone ever use Cataclean on their car. Please answer , my son will be going to college next month.
Thank you
MFJ
I drive the cat is weak but try my video fixing bad Cadillac converters Scotty. Sometimes cleaning can fix it
What do you think of the Cataclean, the product that is suppose to clean catalytic converters???