How to Reset a Check Engine Light

Seeing the check engine light appear on your dashboard can be alarming, but it’s not always a sign of a major issue. Sometimes, minor problems or sensor errors can trigger the light. If you’ve already addressed the underlying issue or are certain that the light came on by mistake, you may want to reset the check engine light. This process can be done in a few steps, but it’s important to make sure you’ve diagnosed and resolved any actual issues before proceeding. Learn more below, or browse our rotating service coupons for savings and tips for further assistance!

Steps to Reset a Check Engine Light

There are a few methods to reset a check engine light, ranging from simple at-home techniques to using specialized tools. Before you reset a check engine light, it’s a good idea to use an OBD-II scanner to check for diagnostic trouble codes (DTCs). These codes help you understand the reason the light came on in the first place. OBD-II scanners are available at auto parts stores, or you can visit a professional mechanic near Cleveland to retrieve the codes. Here’s a breakdown of how to reset a check engine light. 

Method 1: Disconnect the Battery

One of the most common ways to reset a check engine light is by disconnecting the car’s battery. Follow these steps:

• Turn off the ignition and disconnect the negative battery terminal using a wrench.
• Wait for about 15 minutes.
• Reconnect the battery and start the vehicle. The light should reset.

Keep in mind that this method may reset other settings in your vehicle, such as radio presets and clock settings.

Method 2: Use an OBD-II Scanner

A more precise method to reset a check engine light is by using an OBD-II scanner. Here’s how:

1. Connect the scanner to the OBD-II port, typically located under the dashboard.
2. Turn on the ignition but don’t start the car.
3. Follow the scanner’s instructions to clear the trouble codes and reset the check engine light.

Method 3: Drive the Vehicle

In some cases, simply driving the car after resolving the issue will reset a check engine light automatically. The vehicle’s computer will usually need several driving cycles to recognize that the problem has been fixed, after which the light should turn off on its own.

Key Takeaways

• Check for diagnostic trouble codes before resetting the light.
• Disconnecting the battery or using an OBD-II scanner are common methods to reset a check engine light.
• If the light comes back on, it’s essential to address the issue with professional help.

Seek Professional Service at North Coast Mitsubishi Bedford

While knowing how to reset a check engine light can save you time and effort, it’s crucial to ensure the underlying issue is resolved. Resetting the light without fixing the problem may result in more significant damage or repairs down the Northfield road.

If the light comes back on after resetting it, it’s a sign that the problem still exists. In that case, it’s best to visit a certified technician to diagnose and repair the issue properly. Understanding how to reset a check engine light can save you time and stress, but always ensure your vehicle is running safely by resolving any issues first. Stop by our service center today in Bedford, near Warrensville Heights, for an appointment!