Heated Oxygen Sensor (HO2S)

Removal & Installation

Left Side Sensor

To Remove:

1. Raise and support the vehicle.

NOTE: If the heated oxygen sensor (HO₂S) is difficult to remove, lubricate it with lock lubricant to make removal easier.

2. Use the exhaust gas oxygen sensor socket (303-476) to remove the HO₂S.
3. Apply a light coating of anti-seize lubricant to the threads of the HO₂S.

To Install:

1. Apply a light coating of anti-seize lubricant to the threads of the HO₂S.
2. Install the HO₂S using the exhaust gas oxygen sensor socket (303-476).
• Torque to 30 ft-lb (41 Nm).
3. Lower the vehicle.

Right Side Sensor

To Remove:

1. Remove the right, front wheel and tire assembly.
2. Move the right, front fender splash shield to the side.

NOTE: If the heated oxygen sensor (HO₂S) is difficult to remove, lubricate it with lock lubricant to make removal easier.

3. Use the exhaust gas oxygen sensor socket (303-476) to remove the HO₂S.
4. Apply a light coating of anti-seize lubricant to the threads of the HO₂S.

To Install:

1. Apply a light coating of anti-seize lubricant to the threads of the HO₂S.
2. Install the HO₂S using the exhaust gas oxygen sensor socket (303-476).
• Torque to 30 ft-lb (41 Nm).
3. Move the right, front fender splash shield back into its original position.
4. Install the right, front wheel and tire assembly.