Which component monitors the amount of oxygen in the exhaust?

The component that monitors the amount of oxygen in the exhaust is the oxygen sensor. This sensor significantly contributes to the efficiency of the vehicle's combustion process by providing real-time feedback to the engine control unit (ECU) about the oxygen levels in the exhaust gases. The ECU uses this information to adjust the air-fuel mixture fed into the engine, ensuring optimal combustion, reduced emissions, and improved fuel economy.

By detecting the oxygen levels in the exhaust, the oxygen sensor plays a vital role in meeting environmental regulations and improving engine performance. It helps the vehicle maintain its efficiency, reduces harmful emissions, and enhances the overall driving experience by allowing for better throttle response and improved fuel economy. This makes the oxygen sensor essential for modern automotive systems.