During your daily travels or on extended trips, you may have noticed your car’s check engine light turn on.
This symbol isn’t one that should be ignored for long. When it appears on the dashboard, it’s cluing you in that there’s a problem. What that issue is exactly … well, that mystery can take some time to solve. The root cause could span a number of components and various systems.
Every vehicle is made up of a different set of monitors. Some examples include fuel monitors, EVAP monitors, and catalyst monitors.
The car is constantly testing itself, with several tests performed at one time. Each test has a certain parameter, and a code is sent if something is wrong.









