Oxygen sensors are not among the maintenance items that need to be replaced regularly, so they typically are replaced only when they fail.

Learn when TPMS sensor replacement is needed, how sensor modes work, and tips for troubleshooting signal issues in the shop.

If your Check Engine light is constantly trying to get your attention, one possible problem could be a bad O2 sensor. If you do have a failed oxygen sensor, follow these steps to replace it.

A failing O2 sensor can lead to a drastic drop off in fuel economy and performance. Here are our picks for the best oxygen sensor replacements for your car.

If you do attempt a DIY O2 sensor replacement, it's a smart idea to purchase a vehicle-specific repair manual, like those sold by Haynes and Chilton, to help walk you through the process.

Diagnostics An oxygen sensor that’s going bad or has failed altogether won’t always throw a check engine light or trip a diagnostic trouble code. Sometimes if there’s an internal problem ...

I priced up replacement sensors, and a new oxygen sensor could be had for under $100. However, it wasn’t exactly what I wanted, as not all oxygen sensors are created equal.

Your vehicle's O2 sensor plays a significant role in its performance and if it's faulty, it's not something you should ignore. Here's what you need to know.