Safety Glasses
Nitrile Gloves
O2 Sensor
O2 Sensor Socket
Jack
Jack Stands
O2 Wrench
Anti-Seize Lubricant
For this job we will start with the car raised. Check out our video on how to safely jack up your vehicle. If you’re not completely comfortable doing the job yourself, we’d be happy to recommend a professional technician in your area.
Step 1: Determine the Sensor to Be Replaced
The first thing you’ll need to do is determine which sensor needs to be replaced. Each side of the vehicle has upstream and downstream O2 sensors. In our example we’ll be replacing the downstream sensor on the passenger side of the vehicle.
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Do It Right: Stop by your local O’Reilly Auto Parts Store, and we’ll scan your codes for free to help you determine which sensor you need. Find A Store. |
Step 2: Locate and Remove the Old O2 Sensor
With the car raised, we’ll locate the sensor that needs replacing, which screws directly into the exhaust system.
Follow the electrical wire away from the sensor and disconnect it by pushing the tab down and pulling the two halves apart.
Once it’s disconnected, use your socket to loosen the sensor, and then finish unscrewing it by hand.
Step 3: Install the New O2 Sensor
Next, apply anti-seize to the threads of your new sensor, being careful not to get any on the sensor itself. Some sensors will come with a packet of anti-seize, and some will already be treated.
Thread the new sensor into place with your fingers, making sure it threads properly and smoothly.
Finally, tighten it to manufacturer’s specifications with your socket.
Reconnect the electrical wire.
The automotive repair work depicted in this series is performed under the direction of the manufacturer of the product featured. Prior to undertaking any of the demonstrated repairs on your vehicle, we suggest you consult with a certified mechanic or another professional who can adequately advise you of the proper repair or remedy required. O’Reilly Automotive Stores, Inc. and its affiliates (“O’Reilly”) disclaims any responsibility for injury or damage resulting from a viewer’s attempt to recreate the repairs shown in this series.