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How Much Does It Cost to Replace an Oxygen Sensor?

Noble6 OXY ambassadorThe average cost of replacing your oxygen sensor, including doing it yourself and having a mechanic do it, is between $150 and $500. Using this tool, you can determine the oxygen sensor replacement cost with the greatest accuracy for your car. 

The price of replacement for mechanics typically starts at $250 and can go up from there. Fortunately, this is a relatively straightforward process, so labor costs shouldn’t be too extreme given that it shouldn’t take more than an hour.  

It is advised not to select the least expensive option when buying new oxygen sensors. Although there are many oxygen sensors available, quality is important. If you choose not to have a mechanic install your sensors, you may consider purchasing higher quality sensors. And if you have the necessary skills, you might want to think about replacing the oxygen sensors yourself to save hundreds of dollars. 


The Purpose of Oxygen Sensors 

The oxygen sensor, also known as a “O2 sensor,” measures the amount of unburned oxygen in the exhaust as it leaves the engine of your car. 

Your catalytic converter typically has one or two sensors in front of it and one behind it. These sensors inform your car if the fuel mix is running lean (too much oxygen) or rich (insufficient oxygen) by monitoring oxygen levels and sending this information to your engine’s computer (too much oxygen). Your car must maintain the proper air-to-fuel ratio to run as smoothly as it should. 


When to Replace Your Oxygen Sensor 

It’s important to replace your oxygen sensors, and it’s advised that you do it every 60,000 miles. If you experience signs like these, you might need to replace the oxygen sensors sooner: 

  • Poor acceleration 
  • Engine hesitation 
  • Black smoke from tailpipe  
  • Vehicle stalling out 
  • Reduced fuel efficiency 

Scrap Oxygen Sensors 

Most oxygen sensors include a ceramic thimble with a thin layer of platinum and/or palladium on the inside or outside. The precious metals contained within are referred to as rare earth elements, and their extraction from end-of-life components like the O2 sensor is valuable. Auto repair shops that accumulate many scrap oxygen sensors can increase their profits by recycling them to precious metal recyclers like us at Noble6.  


Learn more about getting paid from scrap oxygen sensors here 


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