It’s hard for even a savvy driver to always know when something is wrong with their vehicle, which is why it comes equipped with a check engine light. It turns on when the car’s computer determines that a component in the engine needs attention. You can take your car to the auto shop to have a diagnostic test done to figure out the problem. In the meantime, it’s helpful to know a few of the most common reasons that the warning may trigger.

Top 3 Check Engine Light Problems to Inspect

1. Gas Cap

Your gas cap securely seals your fuel tank, reducing emissions and keeping proper pressure. If it comes loose or is damaged, then the check engine light will turn on. Try tightening it. If the warning persists after 10 or 15 minutes of driving, then the part may be damaged and will need to be replaced.

2. Oxygen Sensor

The part monitors the amount of unused oxygen in your exhaust system. The check engine light will turn on if your sensor is faulty, which can severely reduce your fuel efficiency and damage your spark plugs and catalytic converter. If this is the cause of the warning, it will need to be replaced.

3. Catalytic Converter

The part converts carbon monoxide into carbon dioxide, making your car safer for the environment. A vehicle with a faulty catalytic converter will not pass a smog test, is more likely to overheat, and will have a reduced fuel efficiency. Bring it to the auto shop to check if this is the cause of the light.

The only way to truly determine the cause of a check engine light is to take it to an auto shop for a diagnostic test. Call the professionally licensed mechanics at Collision Masters in Fairbanks, AK, at (907) 451-8456, or reach out online, to schedule a time to bring your car in for a test. They’ll determine the issue and recommend the appropriate repair. They also offer auto painting and car wash services to keep your vehicle looking beautiful.