How to Handle the Check Engine Light: Tips & FAQs

Resetting the check engine light (CEL) can be done in a few methods:

1. Using an OBD2 Scanner:
1. Plug the OBD2 scanner into the OBD2 port, usually located under the dashboard on the driver's side.
2. Turn on your car's ignition to the "On" or "Run" position but do not start the engine.
3. Follow the scanner's instructions to navigate to the "Read Codes" option.
4. Review the error codes for any needed repairs.
5. Once you've addressed the issues or if you just want to clear the light, navigate to the "Clear Codes" or "Reset" option on the scanner.
2. Battery Disconnect Method:
1. Turn off the vehicle and locate the car's battery.
2. Disconnect the negative terminal (usually the black one) for 15-20 minutes.
3. Reconnect the terminal. This will reset most electronic systems in the car, including the check engine light. However, note that if the issue hasn't been fixed, the light will likely come back on after some driving.
3. Address the Issue:
1. Sometimes, simply addressing the problem that triggered the check engine light, like replacing a faulty gas cap, will turn off the light after several drive cycles.
4. Visit a Mechanic: If the light continues to stay on or frequently reappears, it's recommended to see a professional mechanic for a more thorough diagnostic and appropriate solution.



Note: While it's possible to reset the check engine light, it's essential to first understand why it turned on. The CEL is an indicator of potentially significant underlying issues, and simply resetting it without addressing the root cause might lead to more severe problems down the road.

The check engine light, often represented as an engine icon or the words "Check Engine" on your dashboard, is a warning signal that the vehicle's onboard computer has detected a potential issue with the engine or its emission control systems.

The light looks exactly like the image shown above.

If your check engine light is on, it indicates a potential problem, which could range from minor issues like a loose gas cap to more serious concerns like a malfunctioning catalytic converter. If it's flashing, it's a more urgent sign that there might be a severe engine misfire, which can damage the catalytic converter.

First, check if your gas cap is tight, as this is a common and easily fixable cause. If the light remains on, it's advisable to get your vehicle checked by a professional to diagnose the issue. If it's flashing, reduce driving speed, and seek immediate attention.

The easiest method to reset the check engine light is by using an OBD-II scanner. However, certain vehicles allow you to reset it without a scanner by, for example, disconnecting and reconnecting the battery. Remember, simply clearing the light doesn’t mean the underlying issue has been resolved; always investigate the root cause.

Yes, for some vehicles, disconnecting the battery for a few minutes and then reconnecting it might reset the check engine light. However, this method might not work for all cars, and it's always best to address the root problem rather than just resetting the light.