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The Chevy P1400 code indicates an issue with the Exhaust Gas Recirculation (EGR) system, specifically related to the EGR flow or the EGR valve. This code can result from a malfunctioning EGR valve, blocked passages, or issues with the EGR control circuit. It may lead to increased emissions and poor engine performance. Addressing this code typically involves inspecting the EGR system components and ensuring they are functioning correctly.

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4w ago

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