How to Replace an Oxygen Sensor

Below guide will teach you How to Replace an Oxygen Sensor . Please follow the instructions carefully.

Things You’ll Need:

  • Crimp Tool
  • Scan Tool
  • Combination Wrench Set
  • Oxygen Sensor Socket
  • Socket and Ratchet Set
  • Oxygen Sensor Thread Chaser
  • Wire Cutter
  • Oxygen Sensor

Estimated Costs:

  • DIY Costs: Est. $65.17 parts only
  • Shop Costs: Est. $195.48 parts and labor


  • Secure the vehicle on a flat surface with parking brake on.
  • Prop the engine hood up. Make sure that the engine is cold enough because working with hot engine may cause your skin or hand to burn.
  • Look for the oxygen sensor fitted in the exhaust manifold or pipe. If you feel difficulty in reaching at the oxygen sensor from top, you can raise the front of the vehicle with floor jack to access the valve from underneath.
  • Discard the wiring connector to the oxygen sensor and take it out of the exhaust system.
  • Three different types of sensors require different installation technique:
  • In case of universal oxygen sensor, discard the wiring connectors from the defective sensor and join it to the new oxygen sensor.
  • In case of threaded oxygen sensor, coat the threads with anti-seize compound before installing.
  • In case of flange oxygen sensor, use a new gasket and secure the sensor with bolts.
  • Once the oxygen sensor is installed, reapply the wiring connector to the new sensor.
  • Clear the diagnostic trouble code, using the delete or erase command on the OBD Scanner tool.

Further Reading

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