How do you replace oxygen sensor on 2002 Hyundai accent 1.5l?

To replace the oxygen sensor on a 2002 Hyundai Accent 1.5L, first disconnect the negative battery terminal to ensure safety. Locate the oxygen sensor, which is typically positioned on the exhaust manifold or downstream in the exhaust pipe. Use a socket wrench to unscrew the old sensor, and then install the new sensor by threading it in and tightening it securely. Finally, reconnect the battery terminal and start the engine to ensure everything is functioning properly.