How do you replace the oxygen sensor on a 1998 Volvo s70?

To replace the oxygen sensor on a 1998 Volvo S70, first, ensure the engine is cool and disconnect the negative battery terminal. Locate the oxygen sensor, which is typically found on the exhaust manifold or exhaust pipe; use an oxygen sensor socket to unscrew it. Install the new sensor by threading it into place and tightening it securely, then reconnect the electrical connector. Finally, reconnect the battery terminal and check for any leaks or error codes.