Some drivers tend to ignore an illuminated check engine light — CEL — since their vehicles seem to work just fine. While the CEL is not a sign of an emergency, it still means that a part of your car needs repair, and you need to bring it to an auto mechanic. Overlooking this signal may have severe consequences. Here are some troubles that may prompt your malfunction indicator light to turn on.

What an Illuminated Check Engine Light Means & Why You Must Never Ignore It

1. Loose or Missing Gas Cap

Aside from preventing dirt, debris, and dust from entering your fuel tank, your gas cap plays a vital role in your evaporative emissions system. If your gas cap is missing, you will use more fuel due to evaporation. If it is loose, it cannot maintain your fuel line pressure. If your CEL is on, check your gas cap, and tighten it. If it is missing or damaged, go to an auto parts shop and have it replaced.

2. Problematic Oxygen Sensor

Your CEL may also be triggered by a faulty oxygen sensor, which measures the amount of unburned oxygen in your exhaust system. When these sensors fail, your vehicle may burn more fuel than usual. Over time, this can also damage your catalytic converter, which is among the most expensive auto parts to replace. If you want to dodge more damages and costly replacements, have your oxygen sensors inspected by an auto mechanic.

3. Faulty Airflow Sensor

An airflow sensor measures the amount of fuel needed to run your engine. If it breaks down, your CEL will turn on. Have your airflow sensor replaced by an auto mechanic immediately. Otherwise, a broken airflow sensor can affect your vehicle's performance and fuel economy; it can also ruin your oxygen sensors, ignition parts, and catalytic converter.

When your CEL illuminates and you need a licensed auto mechanic, turn to the professionals at Continental Motors in Greensboro, NC. For over 30 years, this locally owned and operated auto repair shop has offered economical solutions to restore their clients' cars regardless of its model—from American autos to Japanese vehicles. For more information, visit their Facebook page, or contact them at (336) 275-4791 to get a free estimate.