How do i replace a o2 oxygen sensor on a 2002 for f150?

To replace the O2 sensor on a 2002 Ford F-150, first ensure the vehicle is cool and disconnect the negative battery terminal. Locate the O2 sensor, which is typically found on the exhaust manifold or downstream in the exhaust system. Use an O2 sensor socket or a wrench to unscrew the old sensor, then install the new sensor by threading it into place and tightening it securely. Finally, reconnect the battery and reset any engine codes if necessary.