There are many possibilities as to why the light came on. You need to have the code(s) read to find out why the light is on to determine how to repair. Many auto parts stores will pull the codes for zip if you purchase the parts necessary to make repairs from them.
A partially clogged converter can get red hot. It could possibly start a fire.
Possibly a plugged catalytic converter.
possibly a clogged catalytic converter
On the exhaust pipe, lower, possibly near the catalytic converter.
do not overfill the oil in your car it may push past the piston rings and burn off making a mess of combustion chambers and possibly clogging the catalytic converter(s) as well as causing issues with other emission components
Loss of power, poor fuel mileage, converter gets red hot, possibly check engine light will come on.
A failed oxygen sensor could possibly cause a catalytic converter fault code.
the converter may be the problem, but I would at the accelerator pump, throttle body. hope it helps. duboff
coud be bad o2 sensor, bad egr valve. it will make you use alot more gas, and it can reuin the catalytic converter. if you can fix it yourself its cheaper to reapr it, the gas saving will pay for the partsif you do it yourself shortly.
Modern cars use two oxygen sensors to monitor the exhaust before and after the catalytic converter. Removing the catalytic converter would cause your engine to run improperly, possibly causing damage and most likely making your gas mileage worse. Just replace it if it's broken.
You will lose power and gas mileage. You possibly will damage the oxygen sensors.
Could possibly be the catalytic converter I've had cars where the cats gone and it restricts speed alot