What does it mean to check the exhaust system?

[DiColton]

Checking the exhaust system refers to a malfunction in the emission system, which may be caused by a dirty catalytic converter or oxygen sensor triggering an alarm signal. It could also be due to poor gas combustion leading to a system alert. If such an alert appears, it is best to visit a 4S shop for inspection and troubleshooting. Additional Information: 1. Composition of the Exhaust Pipe: A car's exhaust pipe consists of three sections: the header, mid-pipe, and tailpipe. The catalytic converter is located in the header, which is also known as the exhaust manifold. In most cars, the exhaust manifold can be seen by opening the engine hood. Over time, the catalytic converter may fail, and if it does, it could cause the engine warning light to illuminate. 2. Function of the Oxygen Sensor: Most cars have two oxygen sensors: one located behind the exhaust manifold and another behind the catalytic converter. The oxygen sensor detects the oxygen content in the exhaust gases and sends this information back to the ECU.