engine light

On my 02 corolla code says o2 sensor: however I have replaced both o2 sensors, catalytic converter, cleaned throttle body and new sensor as well as throttle sensor. After clearing engine light I drive a few miles and the light comes back on. Would like to disconnect the light or fix the problem, any suggestions? Thx Merrill

We need to know more than just o2 sensor. What is the actual code? Your cat could be at fault.

we have our own obdII tester and the code reads PO420catalytic system, bank 1. Thanks