Common Car Warning Lights and What They Mean

Check engine light

Like most people, you’ve probably seen a warning light come on in your car, and wonder “What does this mean?” — today we’re going to help answer that for three common warning lights.

“Check engine” light

The check engine light is connected to your car’s computer, and is one of the most common warning lights seen. It can be caused by a variety of issues, from simple to potentially dangerous.

  • A loose gas cap. A common reason for the check engine light is certainly a simple one. Try tightening it and see if the light goes away.
  • Sensors
  • Spark plugs
  • Other engine issues

“Dirty Air Filter” light

This light means that your engine air filter may be obstructed or dirty. A common fix is resetting the button as well as getting the filter replaced. To learn more about the air filters in your car, check out our articles on them here: The filters in your vehicle, and How to replace your air filter and cabin air filter.

“Break wear” light

A break wear light, more common in newer cars, means that the sensor has indicated your brake pads are thin. If you are unsure if this light is correct, try resetting the indicator. We recommend booking a mechanic when you see this light, as it’s important to have the break pads replaced.

Related articles

Why Your Car Might Squeal When You Turn

Is Window Tinting Legal In Ontario

Top 10 Most Common Car Repairs In 2016

Should You Buy An Aftermarket Catalytic Converter

How to Change a Tire

3 Signs Of A Failing Oxygen Sensor

Extend your car's life. Get car advice straight to your inbox.

Join 5000+ car owners and keep your car in its healthiest form.

More Related Articles

How to Replace The Cabin Air Filter And Air Filter in Your Car

How to Replace The Cabin Air Filter And Air Filter in Your Car

Your car has two types of filters, the cabin and the air filter. This article will help you understand when and how you should replace both.

Read more

5 Ways to Become a Better Nighttime Driver

5 Ways to Become a Better Nighttime Driver

Driving at night is hard — you have to watch out for obstacles and maintain a good sense of direction with rather poor visibility. Here are a few tips to help ensure your safety and comfort when driving at night.

Read more

Learning about your OBD II port

Learning about your OBD II port

The OBD-II port in your car interfaces with the computer, and is connected to the “check engine” light. If you connect to the port, you can read diagnostic information and check errors.

Read more