Oxygen Sensor: Service and Repair

Heated Oxygen Sensors:

REMOVAL

NOTE: If excessive force is needed to remove Heated Oxygen Sensor (HO2S), lubricate HO2Ss with penetrating lubricant E8AZ-19A501-B or equivalent prior to removal.

1. Disconnect negative battery cable.

2. Disconnect HO2Ss from engine control sensor extension wiring (12A690).

3. Raise vehicle on hoist.

4. Remove HO2Ss.

INSTALLATION

1. To install, reverse removal procedures.

2. Tighten HO2Ss to 36-46 Nm (26-34 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.