Your vehicle’s oxygen sensor is responsible for measuring oxygen levels and monitoring emissions. These sensors can check the ratio of air and gasoline in the engine and ensure that it’s running at top performance. If your oxygen sensor isn’t functioning, it’s not able to check and maintain that ratio.

If there isn’t enough oxygen present, known as a rich mixture, the fuel will not burn and create pollution. A lean mixture on the other hand is the result of too much oxygen, which causes poor vehicle performance and engine damage.

The following are signs that your oxygen sensor may need to be replaced.

  • Check engine light is on
  • Failed emissions test
  • Poor gas mileage
  • Engine misfire or stalling
  • Black smoke emission
  • Rotten egg smell

In addition, having an older vehicle puts your oxygen sensor at risk of failing. It is recommended to replace the oxygen sensor every 45,000 miles for cars made before the 1990’s, while vehicles made in the last 15 years can go as long as 90,000 miles without a replacement.

If your vehicle is in need of an oxygen sensor replacement, bring it to Auto Works! Our ASE certified technicians are here to help and answer any questions you may have.