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Trouble code P0457 indicates a "Evaporative Emission Control System Leak Detected (Fuel Cap Loose/Off)." This code is triggered when the vehicle's onboard diagnostic system detects a leak in the evaporative emissions system, often due to a loose or missing fuel cap. It can lead to increased emissions and may affect fuel efficiency. Resolving this code typically involves checking the fuel cap and the surrounding components for any leaks or damage.

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1w ago

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