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www.edmunds.com/car-maintenance/what-your-check-engine...

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

www.reference.com/vehicles/check-engine-light-come-a24a19...

What Makes the Check Engine Light Come On? Although the exact causes vary depending on the type of vehicle, the most common cause of the check engine light coming on is a faulty oxygen sensor. A loose gas cap also causes the check engine light to turn on, so owners should check this first.

www.autozone.com/landing/page.jsp?name=top-five-reasons...

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.

www.yourmechanic.com/services/check-engine-light-is-on...

While a Check Engine Light can come on for a number of reasons, in most cases it is due to one of the following issues: Loose or damaged gas cap: It’s hard to believe that a gas cap can prompt your check engine light to come on, but it can. Your gas cap acts as the seal for your fuel system and it helps maintain the pressure in your fuel tank.

www.proctorcars.com/top-6-reasons-your-check-engine-light-is-on

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.

www.larryhmillerdodgeramhavana.com/service/why-is-my-check...

5. Check Your Gas Cap. When it's loose or cracked, fuel vapors leak out and can throw the whole fuel system off. This causes a reduction in gas mileage and increases emissions.; If your car isn't feeling jerky, or surging when the check engine light comes on, the first thing you need to check is the gas cap.

www.consumerreports.org/.../what-does-check-engine-light-mean

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.

www.angieslist.com/articles/why-did-my-cars-check-engine...

Some also refer the check engine light to the service engine soon light and the maintenance required light. If the check engine light turns on and you start noticing problems with your vehicle's performance, take it to an auto service shop right away. In some cases, a yellow check engine light may indicate that a problem exists, but it's not very urgent.

www.bankrate.com/.../top-10-check-engine-light-car-repairs

So, if you see the check-engine light come on, make an appointment with your mechanic promptly. The annual cost for car repairs is on the rise. After two flat years, ...

blog.esurance.com/top-4-reasons-not-to-panic-when-your...

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.