that all depends on year of vehicle and engine size.Some have two . the converter typically comes after the manifold and down tube and before the mufflers. if unsure its after the first o 2 sensor .
Follow the exhaust pipe from the tailpipe toward the engine. The first big can you'll find is the muffler, the second (smaller) one is the catalytic converter.
It is located within the exhaust system beneath the car. The converter is located after the exhaust manifold or header and is located before the muffler. The space in between them is taken up by exhaust pipe.
The catalytic converter is always connect to the exhaust system on the car. If you get under the car, follow the piping from the engine that connects to the exhaust.
The catalytic converter on a Honda CRV is located on the exhaust in between the headers, and the muffler. The catalytic converter is located in the same place, for every vehicle.
If you pry open the rear gauge, you'll see a button labelled "Administration". Push that button and the converter console should extend from the side. From there, you can access it fully.