What should I do when I see the check engine light on in my car?
What should I do when I see the check engine light on in my car?
user
If the light is on and the car seems to be running normally, then just make a note to yourself to have a mechanic take a look.  You don’t need to take it to the shop just because you see the light.
assistant
So it's usually not anything major?
user
Usually.   If you see the light on, but the car feels like it is misfiring, you should probably take it to the mechanic to see if something serious is wrong.
assistant
What are the common reasons for the light to be on?
user