Is Your Check Engine Light On? Here Are 4 Possible Reasons Why

Check Engine Light

Seeing your check engine light on is never a comforting event. Check engine lights are designed to notify the driver of a major problem. But what exactly is that problem? Express Auto Repair and Emissions invites you for a free diagnostic scan that will determine the cause. In the meantime, check out the list below for possible reasons why your light is on.

Airflow Sensor

A damaged airflow sensor can turn your check engine light on. Your vehicle’s air flow sensor is responsible for detecting the amount of air flowing to your engine. This is vital because it determines the balance between fuel and air within your engine. A damaged airflow sensor might be providing bad readings and can also cause difficulty starting your car.

Catalytic Converter

A damaged catalytic converter can sink your car’s fuel efficiency rather suddenly. This will also turn your check engine light on. You might have trouble accelerating if you catalytic converter isn’t working. Additionally, your car could fail an emissions test.

Gas Cap

If you’re lucky, a loose gas cap could be what turned your check engine light on. Among all the possible reasons, a loose gas cap is the most easily fixable. Release the cover and check your gas cap. Make certain it is secure and tight.

Oxygen Sensor

Has your check engine light come on and your gas mileage suddenly worsened? A damaged oxygen sensor could be the source of your frustration. Oxygen sensors are designed to gauge the amount of oxygen in your exhaust. You may need a replacement. For a free diagnostic test, call Express Auto Repair at (847) 895-9131