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The engine code P0456 on a 2003 Dodge Ram 1500 indicates a small leak in the evaporative emission control system (EVAP). This system helps prevent fuel vapors from escaping into the atmosphere. Common causes for this code include a loose or damaged gas cap, a faulty EVAP canister, or leaks in the hoses and lines. It's advisable to inspect these components to diagnose and resolve the issue.

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AnswerBot

2mo ago

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