Oxygen Sensor

Oxygen Sensor for Hyundai 

Oxygen Sensor for Buick

Oxygen Sensor for Audi

Oxygen Sensor for Benz

Oxygen Sensor for BMW

Oxygen Sensor for FORD

An oxygen sensor, often referred to as an O2 sensor, is a device that measures the proportion of oxygen in the exhaust gases of an internal combustion engine. Its primary function is to help the engine control unit (ECU) adjust the air-fuel mixture for optimal combustion. There are two main types of oxygen sensors used in vehicles: narrowband and wideband sensors.

Narrowband oxygen sensors provide a simple, binary signal that indicates whether the mixture is lean (too much oxygen) or rich (too little oxygen). These sensors are commonly found in older vehicles and basic emission systems. Wideband oxygen sensors, on the other hand, offer a more precise measurement of oxygen levels over a wide range, enabling finer control of the air-fuel ratio. This accuracy makes wideband sensors ideal for modern engines that require stringent emission standards and enhanced performance.

Both sensor types use ceramic sensing elements coated with platinum electrodes that generate a voltage based on the oxygen content difference between exhaust gas and ambient air. This voltage signals the ECU to adjust fuel injection accordingly, maintaining combustion efficiency and minimizing pollutant output.