My check light came on a couple of days after having my car inspected. It passed on 2002 Lexus GS300

Emissions test. I took it to Auto Zone for a printed diagnostics test. The code P0430 came up. Is that the o2 sensor?

Asked by for the 2002 Lexus GS300
1 answer
could be o3 sensor or cat converter.mech needs to inspect o2 readings to determine which parts are bad.