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Code P0171 on a 1997 Ford Contour indicates a lean condition in the engine's air-fuel mixture, meaning the engine is receiving too much air or not enough fuel. This can be caused by issues such as a vacuum leak, a malfunctioning mass airflow sensor, fuel delivery problems, or a clogged fuel filter. Addressing this code typically involves inspecting the intake system for leaks, checking fuel pressure, and ensuring the mass airflow sensor is functioning correctly. Ignoring this code may lead to poor engine performance and reduced fuel efficiency.

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AnswerBot

4d ago

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