P0420 Dodge -

Question

I have change converter and the o2 sensor and have unplugged battery over night..I don't know what to do. Can use plz tell me what I can do to fix this problem? Thanks for Ur time..

Answer 1

HI there,

Sometimes this code can be the result of bad gas or a poorly running engine. If it hasn't had a tune up in a while then it might not be burning the gas clean enough. Also, it's possible the front O2 sensor is causing the truck to run rich on that bank.