July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Downstream

1. Disconnect the battery ground cable.
2. Raise and support the vehicle.
3. Disconnect the electrical connector from the Heated Oxygen Sensor (HO2S).
4. Remove the sensor.
5. To install, reverse the procedure. Tighten the sensor to 29-49 Nm (22-36 lb ft).