Things You'll Need:
- Anti-seize compound
- Jack
- Jack stands
- Wheel chocks
- 7/8-inch open-end wrench
- Gloves
- Small crescent wrench
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Step 1
Operate the vehicle until the engine reaches normal operating temperature. Park it in a level work area, set the emergency brake and turn the engine off. Securely chock both rear wheels.
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Step 2
Using the jack, raise the front end of the vehicle high enough so that the oxygen sensor can be accessed. Place jack stands under vehicle and lower jack until stands are supporting the vehicle's weight. Raise jack again until it is firmly contacting the vehicle jack point, which increases your safety while working underneath the vehicle.
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Step 3
Oxygen sensor locationFind the oxygen sensor by sliding under the passenger side door. The sensor is located on top of the exhaust pipe, forward of the catalytic converter. Be aware that there are two oxygen sensors, one in front of the converter and one behind. Make sure that you are removing the correct sensor (see image).
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Step 4
Junction boxFollow the sensor's wiring back to a junction box. Remove junction box cover by removing the two cover nuts with the crescent wrench. Don the gloves and remove the sensor's connector from the junction box and disconnect the sensor's connector from the car's connector (see image).
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Step 5
Unsnap the sensor harness from its retaining clips while working toward the sensor. Remove harness heat shield when harness is loose. Using the 7/8-inch wrench, remove the oxygen sensor. Use caution not to bump into exhaust components, as they will be hot.
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Step 6
Apply anti-seize to the new oxygen sensor. Replace sensor and tighten securely. Reinstall heat shield, harness and junction box cover in the reverse order as described above. Lower vehicle from jack stands and check engine for proper operation.
