How to Replace a O2 Sensor on a Honda Accord

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The O2 sensor measures the content of the exhaust coming out of your Accord's tailpipe and adjusts the air to fuel ratio accordingly based on the information it receives. Over time, the O2 sensor will fail. This might happen at 100,000 miles, or sooner. When it does happen, you will notice a dramatic decrease in performance. You may not be able to start your Accord, or your Accord's idle may be really rough. At this point, you need to replace the O2 sensor.

Things You'll Need

  • New O2 sensor
  • O2 sensor socket
  • Socket wrench
  • Jack
  • Jack stands
  • Raise the Accord onto jack stands. Lift up the front of the accord with a floor jack using the front jack point. Slide the jack stands under the front pinch welds and lower the Accord onto the stands.

  • Pull the O2 sensor leads off the factory wiring harness.

  • Remove the O2 sensor by turning it counterclockwise with a O2 sensor socket and socket wrench.

  • Install the new O2 sensor. Reverse the order of these instructions to reassemble.

References

  • Honda Accord Repair Manual 2003-2007; Robert Maddox, John H. Haynes; 2008
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