Oxygen Sensor: Service and Repair

REMOVAL
1. Disconnect battery ground cable.

NOTE: When the battery has been disconnected or reconnected, some abnormal drive symptoms may occur while the Powertrain Control Module (PCM) relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 miles) or more to relearn the strategy.

2. Remove cowl extension and right side of leaf screen.
3. Raise vehicle on hoist.
4. Disconnect engine control sensor wiring from Heated Oxygen Sensors (HO2S). Do not remove harness connectors from the brackets.

5. Remove heated oxygen sensors from exhaust manifolds using Oxygen Sensor Wrench T94P-9472-A.

NOTE: If excessive force is needed to remove a heated oxygen sensor, lubricate with penetrating oil prior to removal.

INSTALLATION
1. Follow removal procedure in reverse order.
2. Apply a coating of anti-seize compound to threads of heated oxygen sensor. Tighten heated oxygen sensors to 34-46 Nm (26-33 lb ft).