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. Disconnect heated oxygen sensors from engine control sensor wiring.
3. Raise vehicle on hoist. Use proper vehicle lifting procedures.
4. Remove heated oxygen sensors from dual converter Y pipe using Oxygen Sensor Wrench T94P-9472-A.

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

INSTALLATION
1. Follow removal procedure in reverse order.
2. Tighten heated oxygen sensors to 36-46 Nm (27-33 lb ft).