Average replacement cost of oxygen sensors . Replacing an oxygen (O2) sensor costs between $200 and $500 on average. The O2 sensor itself can cost anywhere from $20 to $300. Profe ...

A heavy-duty mechanic works through the tricky process of troubleshooting and replacing an oxygen sensor on a commercial ...

We earn commissions from purchases you make using links in our articles. Learn more. If your car experiences poor fuel economy, lacks power, feels sluggish, idles rough, or has an illuminated check ...