Where is bank 1 oxygen sensor on a 2002 4 cylinder Chevy Tracker?

On a 2002 4-cylinder Chevy Tracker, the Bank 1 oxygen sensor is located on the exhaust manifold, before the catalytic converter. It is positioned on the side of the engine, typically near the front, and may require some maneuvering to access. This sensor is responsible for measuring the oxygen levels in the exhaust gases to help optimize fuel efficiency and emissions.