What is the Check Engine Light Telling Me?


What is the Check Engine Light Telling Me?There are many, many things that can go wrong with a vehicle. From flat tires to complete engine meltdowns, every time you go to turn your car on and hit the road, you run the risk of something going wrong. However, you chances of encountering any sort of problem or greatly diminished when you provide your vehicle with routine maintenance and you take care of any problems as they come about. One issue people tend to put off is having check engine light diagnostics ran if the light comes on. The longer you wait the worse the problem will be! Here are a few issues that could trigger that pesky little light.

Loose gas cap

The best case scenario if the check engine light comes on is finding out your gas cap was loose, or perhaps it is cracked. If the cap is loose or cracked it may allow fuel vapors to evaporate from the gas tank, thus wasting gasoline the engine never even had the opportunity to use.

Failed catalytic converter

On the complete other end of the spectrum is finding out that your catalytic converter is in need of replacement. This is one of the most expensive parts on a car, but it it won't fail unless something else goes haywire first, which would have likely triggered the light. This is why it is important to to always have diagnostics completed as soon as the light comes on.

Malfunctioning O2 sensor

The oxygen sensor detects oxygen in the exhaust in order to help determine the proper air/fuel mixture in the engine. If it malfunctions it could send false readings which could lead to a rich running engine and a huge waste of fuel.

Bad MAF sensor

The other sensor that helps calculate the proper air/fuel mix is the mass air flow sensor. This sensor measures incoming air and determines how much of it needs to be mixed to create the proper air and gas combination in the combustion chamber. If it fails it could result in decreased fuel efficiency and a poor running motor.

Misfiring spark plugs

If the spark plugs cannot ignite the air and fuel mixture in the combustion chamber properly the check engine light will likely illuminate. This issue will cause your engine to run very rough or sometimes not at all. If your check engine light has come on don't hesitate to have the problem checked out. For expert check engine light diagnostics and repair in Birmingham, AL or the neighboring communities head to HESCO Automotive. Our full service auto repair shop is staffed by expert technicians who will get you back on the road in no time. Give us a call at (205) 526-3796 to request more information or to schedule superior auto repair in Birmingham today.


Hesco Automotive & Performance Center Blog

Written and Published By MORBiZ



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