Check Engine Light Reset Procedures

The check engine light reset procedure can go down 2 paths. You can use a code scanner to retrieve and clear the codes, which is the proper method.

Or you could disconnect the battery and drain the memory holding capacitor in the computer to clear the check engine light that way. I will explain both for you, but I only recommend using a scan tool. Note I added an auto repair video explanation at the bottom.

If you disconnect the vehicle's battery this alone may not clear codes. Some manufacturers store voltage in a capacitor to hold the computer's memory. After the battery is disconnected you can hold down on the horn button to drain the small amount of electrical energy. This will definitely achieve the check engine light reset you were looking for. But there may also be some side effects to this procedure.

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