Why is the Check Engine Light On?


Why is the Check Engine Light On?There are plenty of ways to tell if there is something wrong with your car. Odd smells, weird vibrations and even visual clues such as colorful exhaust or fluid leaks can all indicate trouble. However, if you experience these physical signs of a problem it probably means your car is already due for a big repair. If the check engine light comes on it means you have fair warning to get to a shop to prevent the need for big repairs. This light will generally come on prior to big issues developing, so the sooner you get to the shop the better chances you have of saving some money on repairs! The following are some of the most common reasons the check engine light will come on.

Catalytic Converter

The catalytic converter is a part of the exhaust system tasked with converting hazardous exhaust fumes into less harmful emissions. Unfortunately if this part fails it does mean you're in for a hefty repair. However, this part won't fail unless something else went haywire first, something that probably would have triggered the check engine light and cost much less to repair, such as a faulty oxygen sensor.

O2 Sensor

The oxygen sensor is in the exhaust system and measures the amounts of oxygen (O2) in the exhaust in order to help dictate the proper air/fuel mixture for the engine to operate. This sensor may become corroded and need replacement or simply need to be cleaned after many years on the road. A failed sensor can greatly decrease MPGs.

MAF Sensor

The Mass Airflow Sensor is in the front of the car and measures incoming airflow and calculates how much of it should be mixed with the gasoline. This sensor also may require replacement after many, many miles. This is a rather inexpensive and quick fix for most cars, trucks and SUVs.

Spark Plugs

The spark plugs are fed an electrical charge which causes them to spark and ignite the air and fuel mixture. If they misfire due to corrosion or otherwise it will cause the engine to run very poorly. Simply keeping up with routine auto maintenance, which includes replacing your spark plugs are certain mileage points, will prevent this from happening.

Gas Cap

A loose, cracked or broken gas cap can trigger the light because it may allow for gasoline vapors to evaporate out of the gas filler hose, meaning you're losing gas you didn't even get to try and use!

If your check engine light has come on don't hesitate to visit your local auto repair shop for proper diagnostics. The longer you wait the worse the issue will get. For check engine light repair in Kingman visit the team at Aaction Automotive Center. We strive to provide the best possible service for all makes and models. Give us a call at (928) 212-3510 to learn more about our services or to schedule expert auto repair in Kingman.


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Published By MORBiZ