Oxygen Sensor: Service and Repair

Heated Oxygen Sensor Location:

REMOVAL

1. Disconnect the battery ground cable.

2. Raise and support the vehicle.

3. Disconnect the Heated Oxygen Sensor (HO2S) electrical connector.

4. Use EGO Sensor Wrench T79P-9472-A to remove the HO2S from the exhaust inlet pipe (5246).

Heated Oxygen Sensor Removal:

INSTALLATION

1. To install, reverse the removal procedure.

2. Tighten the HO2S to 30-49 Nm (22-36 ft lb).

NOTE: When the battery has been disconnected and reconnected, some abnormal drive symptoms may occur while the powertrain control module relearns its adaptive strategy. The vehicle may need to be driven 10 miles or more to relearn the adaptive strategy.