That is what the check engine light is for. It informs you of a failure.
A flashing check engine light is an indication of a severe engine misfire.
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.
Probably because you need to check the engine.
Yes, it is possible as you may have a miss. That miss would turn on the check engine light.
Yes it can.
The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, a check engine light is lit when there is a problem in the emissions or somthing that is affecting the effectiveness of the emissions.
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.
That would be the check engine light.
There are pages of things that will turn the check engine light on. You need to have it checked for codes.
A quick way to reset the check engine light would be to disconnect the battery for a short while
If the check engine light is flashing at 1 second intervals , an engine cylinder misfire has been detected