Where is 02 sensor on a 2003 acura rsx?

The O2 sensor on a 2003 Acura RSX is located in two main positions: the upstream (pre-catalytic converter) O2 sensor is situated on the exhaust manifold, while the downstream (post-catalytic converter) O2 sensor is found on the exhaust pipe, after the catalytic converter. To access them, you may need to lift the vehicle and remove any necessary underbody panels for better visibility. Always ensure the engine is cool before attempting any repairs or replacements.