Notice: Handle the oxygen sensors carefully in order to prevent damage to the component. Keep the electrical connector and the exhaust inlet end free of contaminants. Do not use cleaning solvents on the sensor. Do not drop or mishandle the sensor.

Important: 

1. Remove the engine sight shield. Refer to Intake Manifold Sight Shield Replacement .
2. Remove the windshield wiper module assembly. Refer to Windshield Wiper System Module Replacement .
3. Disconnect the oxygen sensor electrical connector (1) from the engine wiring harness at the rear of the left head.
4. Note the wire routing and attachment points for reassembly.
5. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .



6. Remove the oxygen sensor from the exhaust pipe.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

1. Install the heated oxygen sensor (HO2S) to the exhaust pipe.

Tighten
Tighten the HO2S to 42 N·m (31 lb ft).

2. Route and attach the wiring as noted during disassembly.
3. Lower the vehicle.



4. Connect the oxygen sensor electrical connector (1) to the engine wiring harness connector at the rear of the left head.
5. Install the windshield wiper module assembly. Refer to Windshield Wiper System Module Replacement .
6. Install the engine sight shield. Refer to Intake Manifold Sight Shield Replacement .