5 Signs your Oxygen Sensor needs ReplacementAt Clark Automotive, we want to be the first auto repair shop that you call for any type of vehicle repair. Serving the Blaine, MN community, we are proud to be the area’s trusted auto repair shop for the last 17 years. One vehicle repair that you should act on quickly is when your oxygen sensor needs replacement. How do you know when your oxygen sensor needs replacement, you may ask? Well, our certified mechanics want to share 5 signs that your oxygen sensor needs replacement.