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The DTC error code P0173 indicates that there is an issue with the fuel trim in the bank 2 of the engine. This code typically means that the engine control module (ECM) has detected an excessively rich or lean condition in that bank, which can be caused by factors such as a vacuum leak, faulty sensors, or issues with the fuel system. Diagnosing the underlying cause is essential to prevent potential engine performance problems and ensure optimal fuel efficiency.

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6d ago

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