you need to reset the oil life through the radio, that will eliminate the light on the dash, until your next oil change is due Weak oil pump or incorrect size or defective filter. Change the oil filter and replace with the proper AC/Delco filter.
What engine light? The check engine light should come on when you first start the vehicle and then go out after a few seconds. If it does not the bulb may be burnt out or has been removed.
Yes, when you turn on the ignition the Check Engine light will come on for a few seconds to show you the light is working. It will go out if no problem is detected.
The bulb is either burned out or someone has removed it. It should come on for a few seconds and then go out.
Check engine light? Remove the battery ground terminal for a few seconds. If you still have the problem, the light will probably come back on. I have never had that light come on except on start up which is normal.
Turn on the ignition and look at the instruments. You will see the Check Engine Light come on for a few seconds and then go off. If you see the light it is working.
The check engine light will come on anytime the ECU detects a problem with the emission system. It should also come on when you start the vehicle and stay for a few seconds and then go out.
The check engine light on a 1999 Cadillac DeVille can be reset by disconnecting the battery for 30 seconds. The light will immediately come back on if the problem still exists.
Turn on the ignition and look at the dash. The light will come on and stay on for a few seconds to let you know it is working.
It is possible. You need to check the codes to know for sure.
When you turn the ignition key to the run position , just before starting your Explorer , the check engine light should come on for a few seconds to prove that the bulb works
Normally it does not flash. It only flashes when there is a serious problem. It will come steadily on when there is a problem but it is not critical. It will come on for a few seconds when you first start the engine. This is to show you it is working.
When you turn on the ignition switch the check engine light will come on for a few seconds. If it does not then the bulb is burnt out or has been removed. As you failed to list make, model, and year it is impossible to answer your question.