Preliminary Procedure

Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

1

Heated Oxygen Sensor

Caution: Refer to Heated Oxygen and Oxygen Sensor Caution in the Preface section.

Caution: Refer to Fastener Caution in the Preface section.

Procedure

1. Disconnect the heated oxygen sensor harness connector.
2. If reinstalling the old sensor, coat the threads with anti-seize compound. Refer to Adhesives, Fluids, Lubricants, and Sealers .

Tip
A special anti-seize compound is used in the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the compound applied to the threads. If the sensor is removed from an exhaust component and if for any reason the sensor is to be reinstalled, the threads must have anti-seize compound applied before reinstallation.

Tighten
42 N·m (31 lb in)