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OBD2 code P1174 typically indicates a fuel system issue, specifically that the engine control module (ECM) has detected a lean condition in the fuel mixture on bank 1, which is often associated with insufficient fuel delivery or excessive air intake. This can be caused by problems such as vacuum leaks, a malfunctioning mass airflow sensor, or fuel delivery issues. It's important to diagnose the underlying cause to ensure proper engine performance and efficiency.

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4mo ago

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