Do you mean the check engine light does not come on when you turn the ignition on? Possibly the bulb is burnt out.
Not necessarily.
Yes, it can cause check engine light to come on. Reasons are multiple - anything from air/vacuum leak, spark problems etc. to major failure.
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.
Easy, fix the problem that caused the light to come on in the first place.
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
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
Turn on the ignition and do not start the engine. The light will come on unless the bulb is burnt out or someone has removed it.
There are pages and pages of codes, have it checked by a scanner and then diagnosed from there.
No, the check engine light has nothing to do with the oil level in the vehicle. The check engine light will come on when there is a problem with the emission system. The red oil warning light will come on if your vehicle is low on oil.
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.
95 s10 blazer has a miss and check engine light does not come on and exhaust smells gassy what could it be