The oxygen sensor is an essential part of your vehicle’s emissions control system. It’s typically located near the exhaust manifold and is designed to monitor how much oxygen is in the exhaust gases that leave the engine. If it malfunctions, there’s no way to ensure that your engine is receiving the proper air to fuel ratio for combustion. This can cause various engine problems and put the catalytic converter at risk of premature failure. Early identification of a bad oxygen sensor is important so your car can be taken in for auto repairs before a more serious and costly issue develops.

How to Know When Your Oxygen Sensor Is Failing 

1. Illuminated Check Engine Light 

For many people, the first indication something is wrong with their oxygen sensor is that the check engine light comes on. It’s common for a dirty or malfunctioning sensor to trigger this signal.

However, since it can illuminate for a variety of reasons, you’ll need to visit a professional to have the system checked. They’ll figure out if you need auto repairs or if the part should be replaced. 

2. Decreased Fuel Efficiency 

When a vehicle’s oxygen sensor isn’t working right, it’s no longer able to help control the amount of fuel being sent to the engine’s combustion chamber.

This can result in the engine consuming too much fuel, which will cause a significant decrease in your gas mileage. If you suddenly notice your car’s fuel efficiency has been reduced, it may be because of a faulty sensor. 

3. Poor Engine Performance  

Since a bad oxygen sensor will interfere with the engine’s timing and fuel mixture, it can lead to poor vehicle performance while driving. You may experience hesitation during acceleration, stalling, or rough idling. It can also feel like your engine is misfiring. You’ll want to get auto repairs right away to fix these issues and prevent them from worsening.  

If you have any concerns that your oxygen sensor isn’t working correctly, bring your car into Jim’s Auto Clinic for a thorough inspection. Their highly skilled and trained mechanics are qualified to run a full diagnostic test to determine what steps are necessary to keep your vehicle running in optimal condition. Since 1974, they’ve been proud to provide drivers throughout Cincinnati, OH, northern Kentucky, and Indiana with quality auto repairs and honest pricing. Call (513) 662-6696 to schedule an appointment, or visit them online to view a list of services they offer.