Engine Codes-Since 1996, all cars sold in North America have used a common On Board Diagnostics system (OBD-II).
This system alerts drivers that there’s a problem.
As a result, storing Trouble Engine Codes that help technicians to pinpoint what service your car may need.
So, The Check Engine Light indicates that there is a problem with the car. As a result, Either the engine is having a problem or the emission control system has detected an issue. This malfunction is indicated by triggering the Check Engine Light.
The indicator light is sometimes also referred as Malfunction Indicator Light. This warning light is the main indicator to warn you about problems with the engine. Ignoring the warning can cause serious damage to the engine.
There is always at least one OBD2 diagnostic trouble code associated with the check engine light.