What Is a Front O2 Sensor?

Answer The front oxygen (O2) sensor is your car's primary means of monitoring the engine's air/fuel ratio. This measurement is crucial to fuel economy and overall engine performance.HistoryThe oxygen sen... Read More »

Top Q&A For: What Is a Front O2 Sensor

How to Remove Front O2 Sensor in Maxima?

The Nissan Maxima has a series of O2 sensors installed into the exhaust system of the vehicle. The upstream or front sensor is located on the exhaust manifold, underneath the vehicle. The sensor mo... Read More »

How to Replace the Front O2 Sensor on a Maxima?

The front O2 sensor in your Maxima's exhaust system measures the amount of unburned oxygen and relays that information to the vehicle's computer. This allows the powertrain control module to adjust... Read More »

How to Replace the Front Oxygen Sensor on a 2002 CRV?

The 2002 Honda CR-V has two heated-oxygen sensors, or O2 sensors, located in the exhaust system. The purpose of these sensors is to transmit the percent of oxygen in the exhaust gases to the CR-Vâ€... Read More »

How to Replace the Front O2 Sensor on a 2005 Jeep Liberty?

In the 2002 model year, the Jeep Liberty took over the base-level slot in Jeep’s lineup that the Cherokee had held for 17 years. The 2005 Jeep Liberty had two gasoline engines available, a 2.4-li... Read More »