Oxygen Sensor: Service and Repair

Heated Oxygen Sensor Replacement - Bank 1 Sensor 2

Removal Procedure





Caution: Refer to Battery Disconnect Caution Battery Disconnect Caution.

1. Disconnect the negative battery cable.

Notice: Refer to Heated Oxygen and Oxygen Sensor Notice Heated Oxygen and Oxygen Sensor Notice.

Notice: Refer to Heated Oxygen Sensor Wire Repair Notice Technician Safety Information.

Notice: Remove oxygen sensors with the engine temperature above 48°C (120°F). Otherwise the oxygen sensors may be difficult to remove.

2. Disconnect the oxygen sensor (O2S) wiring harness connector.




3. Remove the O2S from the pup converter.

Installation Procedure





Important: A special anti-seize compound is used on the O2S threads. This compound consists of a liquid graphite and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New or service sensors will already have the compound applied to the threads. If a sensor is removed from any engine and if for any reason it is to be reinstalled, the threads must have anti-seize compound applied before reinstallation.


1. Coat the threads of the oxygen sensor with an anti-seize compound, if needed.

Notice: Refer to Fastener Notice Fastener Notice.

2. Install the oxygen sensor (O2S).

Tighten the oxygen sensor to 39 Nm (29 lb ft).




3. Connect the O2S wiring harness connector.
4. Connect the negative battery cable.