Go to Auto Zone , they will check your codes for free and will also turn the engine light off (re-set)
Legally a defective catalytic converter must be replaced.
No, that will not work. A restricted catalytic converter will need replaced.
No, it must be replaced.
There's no possible way to pass inspection with a bad catalytic converter, if if you find out you have a bad catalytic converter during your inspection you have a chance after you after you have replaced the catalytic converter and the inspection no no charge/free!!
No, if it is clogged it must be replaced.
A catalytic converter can be ruined by a engine that is missing and dumping raw fuel into the converter.
No, it is illegal to remove a converter and not replace it.
You don't. They are replaced when damaged or defective
You cannot clean it. If it is clogged it must be replaced.
You cannot unclog a converter. If it is clogged it much be replaced.
No, once it is clogged it must be replaced.
It can't be cleaned, just replaced and recycled.