Will the Check Engine Light Reset Itself?

Check Engine Light Reset Itself

Your car’s dashboard has many warning lights that inform you when there is a problem with your car.

You will have indicators, headlights, a fuel gauge, an engine light, and more.

There are those scary moments when the engine light remains on, and the question is, will the check engine light reset itself after I repaired the problem?

Let’s Find out!

Will the Check engine light reset itself?

Check Engine Light On

Your check engine light will reset by itself after you fixed the problem in most car models. But it can take some time. A car usually needs 10-20 successful cycles before it will reset the check engine light.

A cycle is when you start your car cold and drive it until it is warm and then until you are done with your driving.

If you are sure that you have fixed the problem causing the check engine light, the engine light will reset itself after 10-20 successful cycles, and as you can imagine – 10-20 successful cycles can take a lot of time. Therefore it’s much easier to reset the check engine light with an OBD2 scanner.

What if it does not reset itself?

Repair Car

Some car models will not reset the check engine light itself; you need to reset it with a scanner.

If your check engine light does not reset itself, you need to use an OBD2 scanner to do it. If you want to reset the check engine light with an OBD2 scanner, you can follow this guide: How to reset check engine light.

For the check engine light to reset itself, you do need to repair the problem and not expect it to just disappear without doing anything about it.

Why you should not ignore the check engine light

Drive Car

If you have seen this light go on the dashboard, please do not expect it to disappear and ignore it because it could lead to more serious problems.

Most modern cars have onboard diagnostic systems. This system consists of a car computer that monitors various sensors in multiple car components. If your car has a problem, the sensors will capture this problem and send it to the onboard computer to display a warning light on the dashboard.

By ignoring the check engine light, you may cause several other problems with your car.

Written by: Magnus Sellén

Founder, owner & main author of Mechanic Base. I have been repairing cars for more than 10 years, specialized in advanced diagnostics & troubleshooting. I have also been a drifting driver and mechanic for over 7 years.