If my car is low on oil, will the check engine light turn on?

The short answer is: maybe. If your car is low on oil, it may trigger the check engine light to turn on. However, there are a number of other factors that can also cause the check engine light to turn on, so it's important to consult your owner's manual or a qualified mechanic to diagnose the problem. In some cases, the check engine light may come on because of a loose gas cap or a faulty sensor. Low oil levels can cause serious damage to your engine, so it's important to keep an eye on your oil level and top up as needed.