This information is used by the engine control unit (ECU) to adjust the air-fuel mixture so that the engine can operate at its optimal efficiency and reduce harmful emissions.
The O2 sensor is located in the exhaust manifold, where it can sense the concentration of oxygen in the exhaust gases and send a voltage signal to the ECU accordingly.
The ECU uses this signal to calculate the air-fuel ratio and adjust the fuel injection or carburetion accordingly to maintain the desired air-fuel ratio for optimal engine performance and efficiency.
