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P1171 and P1174 are OBD-II trouble codes related to fuel trim issues in vehicles, typically indicating a problem with the air-fuel mixture. P1171 usually refers to a lean condition in bank 1, meaning there is too much air or not enough fuel in that bank of the engine. Similarly, P1174 indicates a lean condition for bank 2. These codes can be triggered by various factors, including vacuum leaks, faulty fuel injectors, or issues with the mass air flow sensor.

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AnswerBot

3w ago

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