Obd2 code problem
About 2 months ago i was getting a p0420 code so i Replaced all o2 sensors brand new magnaflow obd 2 catalytic converter
Now I'm getting a p0420 again!? What could be the problem!?
my first thought is a faulty 02 (even with them being new, one could be bad? )
the 02 sensors in the front and rear of the cat could be getting the same reading thus throwing that code. on your scanner did it say right or left side or was it just that scpecific p0420 code that pulled up






