Where is the bank 2 sensor 1 heated oxygen sensor located on a 1999 Mitsubishi Diamante?

On a 1999 Mitsubishi Diamante, the bank 2 sensor 1 heated oxygen sensor is located on the exhaust manifold or just after it in the exhaust system. Specifically, it is positioned on the side of the engine that corresponds to the rear bank (the passenger side). To access it, you may need to lift the vehicle and work from underneath or remove any necessary components obstructing the sensor.