catalytic went bad on car on 1992 Honda Accord

I am curious what could have caused my 92 honda accord dx to have a catalytic converter become defected.I have an after market denso 02 sensor and a new timing belt.

1 answer
IT COULD JUST BE WORN OUT AS ALOT OF CATTS DO. IT COULD BE A FUEL TRIM ISSUE ALSO IF CAR IS REG MAINTAINED ITS MOST LIKELY JUST WORN OUT AS I SAID