What Does It Mean When Your Check Engine Light Comes On?

It’s easy to dismiss an illuminated check engine light, especially if it isn’t constantly blinking. While that small, innocuous symbol can indicate a wide variety of issues with your vehicle, many drivers can feel overwhelmed or confused by these multiple possibilities. However, learning to recognize your car’s warning signs can save you time and money in the future. 

What makes the light turn on?

After 1996, all cars were equipped with a standardized OBD-II, or onboard diagnostic system, that monitors the car’s general functions and pollutant output. If the OBD detects a problem with your car, it will relay a diagnostic code, causing the check engine light to turn on. An automotive professional will be able to access the OBD connector and identify which code is present. 

What does a blinking check engine light mean?

Check engine lights can vary from vehicle to vehicle. For the most part, however, their basic function remains the same. For example, a yellow check engine light that remains steady and does not blink usually indicates a minor problem, such as a defective spark plug. While you should still get the problem checked out as soon as possible, there’s no reason to panic. A check engine light that blinks or turns red, however, is an indication of a more serious problem, such as an overheated engine or damaged catalytic converter. In this scenario, it’s essential to get your car serviced right away by a professional who can properly diagnose the problem. 

While scheduling and paying for a service appointment can be inconvenient, it’s best to take care of your vehicle as soon as you spot that glowing check engine light. A minor disruption to your day now will save you from having to deal with more costly issues down the road. 

If you notice your check engine light is flashing or glowing red—or a neglected check engine light is now causing bigger problems—don’t hesitate to call Barnett’s Towing. We’re Arizona’s leading towing company, and you can reach us at (800) 722-2302 for prompt roadside assistance 24/7.

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