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To reset the check engine light on your Mitsubishi Lancer, remove the cable clamp from the negative battery terminal and wait for at least 10 minutes before reattaching it. These steps will reset both the Lancer's check engine light and the electronic control unit. It's crucial to take the check engine light seriously, as it can indicate significant issues like a misfiring engine due to an overheated catalytic converter. It may also illuminate for minor problems like a faulty gas cap. Ignoring these warnings could jeopardize your safety and your vehicle's well-being.
To turn off the check engine light in a Mitsubishi Lancer, you'll have to utilize an OBD II scan tool to reset the light.