Code PO420

Asked by dmode951 Mar 04, 2019 at 12:27 PM about the 2008 Toyota Camry LE

Question type: Maintenance & Repair

I have a 2008 Toyota Camry Le. It's spitting a Po420 code and a check engine
light. I replaced both O2 sensors and the cat both the check engine light will not
reset. I reset it the light after the work but it came back on.
Need advise on what to do next.
Thank you

3 Answers
1,435

Jerry answered 5 years ago

Perhaps you have some bad wiring/connectors

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