Most drivers are familiar with the majority of warning lights that might appear on their dashboard while operating their vehicle. For example, when the Low Fuel or Door Ajar warnings are lit we generally know what they mean and how to handle them. But for many drivers, the Check Engine light is an indicator that is not only confusing but one that can create a moment of panic with drivers. The good news is that you don’t have to be scared if you understand more about this warning.
In this blog, we discuss the importance of the Check Engine light and what it might mean to your vehicle. We examine the frequent causes of this warning light and how you should respond when you see this indicator on your dashboard.
What is the Check Engine light?
Today’s vehicles are equipped with onboard computers that monitor the performance of your vehicle at all times. This computer system is called the Electronic Control Module (ECM), or sometimes referred to as the Electronic Control Unit (ECU). When your vehicle’s computer detects a failure or malfunction within specific components of the vehicle’s operation, the Check Engine light will illuminate.
The first instinct for many drivers when this warning appears is one of dread and panic. Although the Check Engine light is critical to address, the causes can vary from simple, easy to fix items to costlier and extensive repairs.
The rule of thumb when the Check Engine light appears is to have it addressed as soon as possible by a service professional. For the most part, the Check Engine light is an early warning of a potential bigger problem. However, if the light is flashing on your dashboard you should immediately pull the vehicle over to a safe spot and contact roadside assistance to avoid further engine damage.
What are some causes of the Check Engine light?
There are many possible causes of a lit Check Engine light – we review the more common ones you may experience.
- Loose Gas Cap: Believe it or not, if your gas cap is loose or faulty it can trigger the Check Engine light. In many cases, this is a situation that can easily be remedied by fully removing the gas cap and screwing it back on securely. Once the vehicle is operating again, the Check Engine light should distinguish on its own. This could take a few minutes of driving before it goes out. If the light does not go out, it could still be a faulty gas cap. You will need to get it checked by a service professional to determine if the cap needs to be replaced.
- Faulty Sensors: There are two different sensors that more commonly trigger the Check Engine light – the Oxygen (O2) Sensor or the Mass Airflow Sensor. The O2 Sensor measures the amount of oxygen in your exhaust system and the Mass Airflow Sensor measures the amount of oxygen in the combustion engine. Both are important to keeping your vehicle starting, running smoothly, and conserving fuel.
- Faulty Spark Plugs, Wires, or Ignition Coils: Your vehicle’s spark plugs ignite the combustion engine to run. Spark plugs may get dirty or loose, and trigger the warning light. Also, the Ignition Coil(s) create the electricity for your spark plugs and may be faulty and unable to produce the necessary electricity. The wires that lead from the ignition coil(s) to the plugs can also be faulty.
- Catalytic Converter Issues: The catalytic converter is an important part of your vehicle’s exhaust system that helps to convert the exhaust gases to emit less toxic fumes into the environment. If your catalytic converter is damaged or has succumbed to prolonged wear, this can trigger the Check Engine light. Unfortunately, catalytic converter repair and replacement can be very costly, so check with your service professional at Car Kings in Wallington, New Jersey to learn about ways you can maintain the health of your vehicle’s catalytic converter.
Next Steps
When you bring your vehicle to a service professional, they will use a device that reads the fault codes on your ECM. This will help them in pinpointing the possible issue that is triggering the Check Engine light. If your Check Engine light has recently illuminated, and you have not had it addressed, contact us at Car Kings today to schedule a full inspection. We will diagnose the issue and offer recommendations for repairs.
Always remember to take the Check Engine warning light seriously. By addressing this warning indicator promptly, you will save yourself from a lot of headaches and expenses in the end.