WHY IS MY CHECK ENGINE LIGHT ON?

Charlie Frederic • September 2, 2026

WHY IS MY CHECK ENGINE LIGHT ON?

Your check engine light can come on for many different reasons. Some problems are small

Others can cause more damage if they are ignored. Common causes include:

• A loose gas cap

• A small leak in the fuel vapor system

• Worn spark plugs

• Bad ignition coils

• Engine misfires

• Sensor problems

• Fuel or air problems

• Wiring problems


Here is something important to know: A trouble code does NOT always tell us what part is bad.


Think of the code like a ZIP code. It can tell us what system has the problem, but it cannot tell us the exact part that is bad. The diagnostic testing helps us find the “house” where the problem is. That is how we find out what is really wrong before replacing parts.


 ๐Ÿ”ด IS THE LIGHT FLASHING?

A flashing check engine light can mean the engine is misfiring.

If your vehicle is shaking, losing power, or running badly, you should stop driving it. Driving it could cause more damage.


 ๐ŸŸก IS THE LIGHT SOLID?

A solid check engine light may not mean you need to stop right away, but you should still have it checked. Waiting too long can turn a small problem into a bigger one.


At Automotive Blessings, we do not want to guess and replace parts.

We want to test the vehicle, find the real problem, and fix it right. Understanding Your Vehicle.

Protect Your Investment.


๐Ÿ“ Serving Kennesaw and the surrounding area.


During the month of September we are having a Labor special in light of “Labor Day”

You get 1 hour off any repairs over 2 hours. 


Visit our website to schedule your service today.


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