depends on the vehicle, you usually can tell by using a scan tool and watching the O2 upstream and downstream sensors, if they read the same the cat is faulty, the rear or downstream sensors should be a straight line if the cat is ok
Faulty catalytic converter, or sensors in exhaust faulty
No, the catalytic converter has nothing whatsoever to do with your defrost system.
about $250
Yes, it can if faulty or missing.
Immediately.
A faulty muffler will not cause this but a clogged catalytic converter will.
Most likely a faulty gasket in the oil system, a faulty catalytic converter or a faulty component in the exhaust system.
loss of power.noise rattling from exhaust
Transmission torque converter or an exhuast catalytic converter?
It can't the converter is in the exhaust system
catalytic converter
Yes, a faulty catalytic converter can cause fuel consumption to raise. Replacing a known bad catalytic converter will help, but keep in mind, the catalytic converter usually does not fail on its own. converters are pretty tough, living their lives running at 2000+ degrese internally. I would check your EGR valve and EGR valve tube for blockage or carbon build up. a faulty or clogged EGR valve will overtime distroy a catalytic converter. second thing to check is your Oxygen Sensors. these sensors are the computers first reading of bad fuel mixture, if they are clogged with carbon, they can distroy your EGR valve, which inturn kills your converter.