The catalytic converter is an emissions device that converts the exhaust gasses exiting the engine into a less toxic substance. This is achieved through the internal honeycomb monolith, washcoat, and the catalyst itself that commonly consists of a mix of precious metals. Unfortunately the catalytic converters do not last forever, and can be damaged if the engine is running too rich on fuel. If you're getting an oxygen sensor fault, and the sensor is ok, the likely cause is a failed catalytic converter.
Relieve worry about an upcoming emissions test and replace your faulty or damaged catalytic converter.
Check your local laws regarding replacement of aftermarket catalytic converters. This particular catalytic converter is not legal for 1996 & up California vehicles. This is OE style replacement that might look different than your OEM version. It is made to fit in your stock location without any modifications.
This Part Fits the Following Vehicles
|Volkswagen||Passat B5||4 Motion||1.8T|