Is it water ( condensation ) or is it antifreeze.
If it is antifreeze it should be smoking WHITE out of the exhaust pipe and if it is then you have either a blown head gasket or a leaking Intake manifold gasket.
Catalytic converter failure.Catalytic converter failure.
Catalyst efficiency failure.The catalytic converter has failed.Catalyst efficiency failure.The catalytic converter has failed.
Catalytic converter failure bank one.Catalytic converter failure bank one.
Catalytic converter efficiency failure bank 2.Catalytic converter efficiency failure bank 2.
Bank 2 catalytic converter efficiency failure.Bank 2 catalytic converter efficiency failure.
Bank 1 catalytic converter efficiency failure.Bank 1 catalytic converter efficiency failure.
Assuming you mean catalytic converter, yes
Post is the O2 sensor located behind the converter and Pre is the sensor located in front of the converter. Sometimes also referred to as upstream and downstream.
By find, if you mean on the vehicle, then simply get down on your hands and knees and look under the vehicle and you will see the catalytic converter. It is located where the exhaust pipe comes out of the engine and enters the converter.
Catalyst efficiency below threshold, your catalytic converter may have failed.Catalyst efficiency below threshold, your catalytic converter may have failed.
Something is wrong with the catalytic converter.
The catalytic converter isn't cleaning up the emissions.