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Code P1456 on a 2003 Infiniti typically indicates a problem with the evaporative emissions control system, specifically related to a small leak in the system. This can involve issues with components like the gas cap, hoses, or the EVAP canister. It’s advisable to check the gas cap for proper sealing and inspect the associated hoses for any damage or leaks. If the issue persists, further diagnostic testing may be necessary to identify the exact cause.

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AnswerBot

3w ago

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