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Have you ever wondered what causes a car's check engine light to come on? Here, we list some of the most common mechanical and electrical problems that can trigger this important warning, and ...


Your Check Engine Light may be indicating a simple problem that’s easy to fix—such as a loose gas cap that needs to be replaced. It could also be a warning of a serious problem that could damage your engine components. Your Check Engine Light blinks or glows depending on what’s wrong with your vehicle.


In general, five common malfunctions can cause the check engine light to come on, and some of them are simple to fix yourself. Let’s take a look at the most common issues. Advertisement


The check engine light is an irritation for many drivers, but it gives you essential information about your car and shouldn't be ignored.


However, the “check engine” light can also be triggered by a number of minor issues. It is this generic function of the “check engine” light that can frustrate drivers when it lights up. It is not that uncommon for the “check engine” light to serve as notice that a part needs attention.


If this was indeed the trigger, your check engine light should go off within 10 or 20 miles once you’re back on the road. 2. A certified mechanic should be able to diagnose the problem easily. Technology is on its way to helping us figure out what’s gone wrong when the check engine light comes on.


CHECK ENGINE LIGHT QUICK FIX 1 OF 3. CHECK ENGINE LIGHT QUICK FIX 1 OF 3. Skip navigation Sign in. Search. ... 3 ways to turn off CHECK ENGINE without scanner EASY!! - Duration: 5:21.


Consumer Reports tells you what the check engine light means and what you should do when you see it. Learn how to determine whether your car has a loose gas cap—or a serious engine problem.


The check engine light comes on when an electrical / electronic issues in the engine management system. The electronic control unit (ecu) relies on input from dozens of sensors located throughout the vehicle. If any of these sensors are faulty, the check engine light will come on to indicate a fault code has been stored.


The check engine light generally comes on if there is a problem with the emissions system in the vehicle. Even if the gas cap is on tightly, it may still be the cause of the problem if the seal is damaged or the cap is otherwise faulty. A faulty catalytic converter is another common cause of the check engine light.