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.
The engine is overheating. The check engine light is not on because you have no problem with the emissions system which this light monitors.
VTEC may or may not work when the check engine light is on. It depends on why the check engine light is one. If it is on because of a problem with the VTEC system, then, no, it will not work properly.
Probably because you need to check the engine.
That is the check engine light.That is the check engine light.
No, oil level does not cause the check engine light.
The service engine light is the same thing as a check engine light.
Check your engine. Check your fluid levels and add if needed.
The check engine light is the light shaped like an engine, or the light that states Check Engine (Soon). If this light comes on, it is time to see what the issue is with the engine.
The Check Engine light is on because there is a problem with the emissions system. Once you have the problem repaired the light will go off.
The Check Engine Light has nothing to do with oil changes. It is on because there is a problem with the emissions system.
A spark plug that is causing a misfire is one of many reasons for the check engine light to come on.