What Does the Check Engine Light Mean?

In the simplest terms, it means something is wrong with your vehicle.

The check engine light system was standardized and implemented in the United States in models from 1996 and newer to help reduce vehicle emissions. The system is designed to better and more efficiently detect problems beneath the hood.

As a crucial part of the second-generation on-board testing system (OBD-II), it provides a computerized alert on your instrument panel indicating a problem with your engine or exhaust. It comes with a set system of fault codes, allowing technicians to use a code reader or scanning tool to determine the problem no matter the vehicle’s make or model. Thanks to this automated alert, it provides ample time for issues to be rectified before they escalate.
Common Check Engine Light Causes
If your check engine light comes on, here are some possible causes:
1. Bad oxygen sensor: A faulty oxygen sensor is one of the most common causes behind a check engine light being on. If your sensor is not working properly, your car will burn more fuel.
2. Spark plug problems: Another possible reason behind an illuminated check engine light is a spark plug and coil concerns. Bad spark plugs will cause misfires and more problems.
3. Catalytic converter concerns: A car’s catalytic converter keeps pollutants from being released through the tailpipe. If your check engine light pops on, this auto component could be clogged or need replacing.
4. Loose gas cap: The reason for a glowing check engine light may be as simple as a loose gas cap. Simply tighten the cap and see if the light goes off.
5. Bad battery: If your car’s battery isn’t properly holding a charge, your check engine light could come on.
If your check engine light is on for an extended period of time, be sure to make a service appointment at Legacy Tire & Service Centers in Acworth or Woodstock, Georgia.
Why You Shouldn’t Ignore a Check Engine Light

You should never ignore an illuminated check engine light on your dash. Even if your car seems to be running and functioning fine, you still need to take your vehicle into a shop to be seen by a professional.

If you ignore the problem and don’t get it checked out, it could lead to bigger, costlier issues down the road. An illuminated check engine light also may mean that your car is unsafe to operate. Don’t put yourself and others in danger; get your vehicle looked at right away.

Check Engine Light Testing in Acworth

How do we know what’s going on?

The check engine light system contains a variety of trouble codes that point to the source of the problem. Our team utilizes a scan tool or code reader to grab the trouble code, and from there, perform an inspection of the piece to troubleshoot the exact issue. Because the trouble codes are universal, our advanced testing technology works with all makes and models.

Once we determine the precise problem, our team will walk you through the repair process to fix it and get you back on the road in a timely manner. They are happy to address your concerns and answer any questions you may have. For your convenience, we feature same-day service and welcome walk-ins.

Find your nearest Legacy Tire & Service Centers location and schedule an appointment or stop by today.

Check Engine Light in Acworth and Woodstock, GA

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Check Engine Light Testing in Acworth

Need Tires or Car Care?Trust the Legacy!

Check Engine Light Testing in Acworth

Need Tires or Car Care?
Trust the Legacy!