Most probable cause for catalytic converter failure is an engine misfire. I had been an automotive technician for 30+ years and have not heard of that being a failure UNLESS the evaporative system is broken. It would have to have a vent solenoid problem causing the canister to fill with fuel which would cause rough idle or engine misfire. It could also be from a faulty purge solenoid that would be stuck open all the time and again would be a driveability problem. Both should set codes and turn on your check engine light also.
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