OBDII Automotive Articles - 5 Most Common Reasons for a Check Engine Light

5 Most Common Reasons for a Check Engine Light

-Edited: Apr 07, 2022
-Popularity: 58,743 Views

5 Most Common Reasons for a Check Engine Light

The Check Engine Light or Service Engine Soon Warning Light is one of the most frustrating and confusing warnings for vehicle owners.

A steady warning light means there is no immediate cause for alarm, but you should still get it checked out. A flashing warning light means that the problem is more serious, and you must check for codes.

Common causes vary depending on your vehicle’s brand, but here is a list in general of the most common:

1. Loose or damaged gas cap
2. Worn out or faulty spark plugs
3. Faulty Oxygen (O2) Sensor
4. Faulty Mass Air Flow (MAF) Sensor
5. Faulty Camshaft Position Sensor

5 Most Common Reasons for a Check Engine Light