Why is the Check Engine Light On?

If your Check Engine light is illuminated, you are likely wondering if there is something wrong with your vehicle. Exactly what does the Check Engine light mean, considering all the different parts and functions of the typical engine? It might indicate anything from the need for routine maintenance to potentially serious problems that require immediate attention. To ensure your vehicle’s reliable performance on the roads of Richmond Hill, Mississauga, and beyond, Pfaff Automotive Partners answers in more detail the all-important question: “Why is the Check Engine light on?”

What Does the Check Engine Light Mean?

There is a wide range of possible issues that your Check Engine light may be alerting you to. So, what does the Check Engine light mean? Here are just a few of the more common reasons why the Check Engine light may be on:

• Oxygen Sensor – The oxygen sensor detects the amount of oxygen in the exhaust to keep tabs on how much gas you are using. Oxygen sensors need to be replaced from time to time, and the Check Engine Light will typically come on when this time has come. If you do not replace your oxygen sensor, your fuel economy may be compromised or your catalytic converter might fail.
• Catalytic Converter – And speaking of catalytic converters, these important auto parts convert carbon monoxide into less toxic emissions so your vehicle produces as little pollution as possible. Other signs of a failing catalytic converter, besides an illumined Check Engine Light, include sluggish acceleration and poor fuel efficiency.
• Loose Gas Cap – Yes, something as simple as a loose fuel tank cap can trigger the Check Engine light. Be sure to check this first, as it is one of the easier fixes!

How to Reset the Check Engine Light

Now that you know a few possibilities as to what the Check Engine light means, you may be curious about how to reset it. Exactly how to reset the Check Engine light varies from one vehicle make to the next, so start by consulting your owner’s manual. But never ignore a Check Engine light because you could be overlooking a potentially major problem; bring your vehicle to a qualified service centre for repairs, and they will know how to reset the Check Engine light for you.

Schedule Service Near Thornhill Today

Make a service appointment today, and we will determine why the check engine light is on. Contact us to schedule a time that works for you. Until then, take a look at our other service tips and tricks to maintain your new or used vehicle in between service visits. Our skilled and experienced technicians are here to keep your vehicle running its best in Vaughan or wherever the road takes you.