P0420 Jeep - what do you think the problem is. do you think is the O2 sensors?

Question

P0420 Jeep. what do you think the problem is? Do you think it is the O2 sensors?

Answer 1

Hi there,

Typically with this code the issue is the converter itself, not the O2 sensors, however if you have a scan tool that can read the live data from the O2 sensors you can determine if the sensors are causing the problem or the cnverter itself.