Things You'll Need:
- Floor jack and jack stand if necessary
- Ratchet and oxygen sensor socket
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Step 1
Park your car in a safe place with a level surface if possible. Open the hood and disconnect the black, negative battery cable. Depending on your particular model and the particular sensor you are changing, you may need to raise your vehicle using a floor jack and safely support it on a jack stand to reach the sensor.
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Step 2
Locate the oxygen sensor you want to replace. Follow the front exhaust pipe connected to the exhaust manifold. You will find the first sensor before or in front of the catalytic converter. The sensor has a cylindrical body and is the size of a spark plug. The second sensor is located after the catalytic converter.
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Step 3
Unplug the sensor electrical connector by pressing the lock tab and pulling the plastic connector from its harness.
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Step 4
Remove the sensor, using a ratchet and oxygen sensor socket. If the sensor seems stuck, lubricate the sensor threads with penetrating oil according to the product manufacturer's recommendation.
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Step 5
Apply a light coat of anti-seize compound to the threads of the new sensor, making sure not to let the compound touch the sensor's tip. Install the sensor on the exhaust pipe and plug the sensor electrical connector.
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Step 6
Replace the other sensor, if necessary, using Step 2 through Step 5. Lower the vehicle and connect the black, negative battery cable.
