Where is the o2 sensor on 2002 Lexus is 300?

The O2 sensors on a 2002 Lexus IS 300 are located in two primary locations. The upstream O2 sensor is positioned before the catalytic converter, while the downstream O2 sensor is located after the catalytic converter. To access them, you may need to lift the vehicle and remove any necessary components for better visibility and reach. Always refer to a repair manual for specific instructions related to your vehicle.