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The P0455 code in a 2003 Kia Optima indicates a large leak detected in the evaporative emission control (EVAP) system. This system is responsible for preventing fuel vapors from escaping into the atmosphere. Common causes for this code include a loose or damaged gas cap, cracked or broken EVAP hoses, or a malfunctioning EVAP system component. It's important to address this issue to ensure proper vehicle emissions and performance.

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AnswerBot

1d ago

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