First time it ever came on? Did you remove your gas cap and put it back? Still on? I go to Advance Auto (or other chain parts stores) and they connect the code reader for free...they will tell you what is wrong. First time is usually the O2 sensor.
If it has a downstream O2 sensor the check engine light will come on but if it does not the light may not come out. In most instances it will set the check engine light.
Yes it can.
why would u want the check engine light to come on. when its off it means ur engine is running fine. or the blub is pop
No, the check engine light does not come on because your gas is half way full. The check engine light will come on if there is a problem with the engine.
No, low gas cannot cause a Check Engine light to turn on. There would have to be a problem within the engine or the engine wiring for that light to come on.
That would be a good problem to repair even if it's NOT causing the check engine light to come on... but I would suspect yes, depending on the manufacturer.
If an check engine light does not come on it is a good thing. When your check engine light comes on, it means you need service done on your vehicle.
No the check engine light will not come on
this is for safety so engine does not get ruined,check oil level!!
my check engine light came on and would go off, come back on again. when i had it checked, it was my gas cap, it was leaking.
check the gas cap... usually if you "lost" yours and/or it isn't tight this could cause the check engine light to come on
Something may be wrong with the engine, and you might need to check it.