Where is the three-way catalytic converter installed in a car?

[LeWalker]

The three-way catalytic converter is located at the front end of the engine exhaust pipe, between the front and rear oxygen sensors. The three-way catalytic converter is the most important external purification device installed in the automobile exhaust system. It can convert harmful gases such as CO, HC, and NOx emitted by automobile exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. Symptoms of a faulty three-way catalytic converter: Increased fuel consumption: When the three-way catalytic converter begins to clog, it affects the normal operation of the oxygen sensor, making it impossible to precisely control fuel injection, intake, and ignition, thereby increasing fuel consumption. Reduced vehicle power: When high-pressure exhaust is required, clogging will lead to poor exhaust, which affects the intake volume, resulting in decreased engine power and poor acceleration. Three-way catalytic converter fault light illuminates: When the engine's related sensors detect abnormal exhaust emissions, they will provide a signal to the electronic control unit, ultimately alerting the owner through the fault light.