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The P0456 OBD-II code indicates a small leak detected in the evaporative emission control system (EVAP) of a vehicle. This system is responsible for preventing fuel vapors from escaping into the atmosphere. To repair it, you should first inspect and replace any damaged or loose hoses, clamps, and the gas cap. If the problem persists, further diagnostics may be needed to check components like the charcoal canister and the EVAP purge valve.

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4mo ago

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