How to change oxygen sensors:

Follow this helpful step-by-step guide.

How to change oxygen sensors: this is important to know because oxygen sensor problems can cost you money.

Keeping your engine running at peak performance not only keeps you smiling but can also keep money in your wallet.

A worn oxygen sensor can cause up to a 15% decrease in mileage and – with today’s fuel prices – that can really add up. An oxygen sensor can malfunction anywhere from 30,000 to 100,000 miles depending on type and vehicle.

Advance Auto Parts has top-quality sensors and components tailor made for your vehicle, along with a complete line of other quality auto parts. Check with your Advance Auto Parts Team Member to see if you need a special O2 sensor removal wrench for this project.

Why you should periodically replace oxygen sensors – and how oxygen sensor problems can happen:

The oxygen sensor in your vehicle is your engine’s nose. The sensor sniffs out what’s going on with your engine’s exhaust and adjusts the incoming fuel-air mixture accordingly. If your oxygen sensor isn’t working properly, your vehicle will not perform as well as it should. Replacing your vehicle’s oxygen sensor at regular intervals keeps both your vehicle and the environment healthy by allowing your engine to run at peak efficiency, and avoids oxygen sensor problems.

How to change oxygen sensors; what you will need:

Do-it-yourself difficulty guide for replacing oxygen sensors:


Estimated time required - 30 Minutes - 2 Hours

How to change oxygen sensors: do it yourself & save!

Replacing an oxygen sensor may be difficult depending upon its location. Determine the location and number of sensors before starting this procedure. Consult your vehicle’s repair manual for replacement intervals and vehicle-specific information.

  1. With the car completely cool, and the negative battery post disconnected, spray penetrating lubricant on the oxygen sensor threads. Remove the wire(s) from the sensor, taking note of their routing. Allow the lubricant to sit for 15 - 30 minutes, then gently remove the sensor using a box end wrench or specialty socket whenever possible.
  2. Gently hand-thread the new sensor into the mount after lightly coating the threads with anti-seize compound, if your new sensor does not already have it.
  3. Tighten the new sensor with the appropriate wrench. Make it tight, but not so tight as to strip the threads. Reconnect the wiring, then the negative battery post.

For high quality auto parts – including oxygen sensors – visit Advance Auto Parts!