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I have a 2012 Nissan DAYZ 660cc model. it has the OBD code p0171 I will try my best to fix it but I can`t. so plz help me with how I can fix that...

Vehicle: 2012 Nissan DAYZ 660cc

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This code is for a lean fuel mixture on bank 1. This can be caused by several things, a vacuum leak, low fuel pressure, a bad mass air flow sensor or front O2 sensor. Each item has to be eliminated as the possible cause to resolve the problem.
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If you are in Lahore go to surkhail restomore(having channel on YouTube)

Usually map sensor is faulty and fuel pump gone weak or its filter and regulator is choke clean both fault will be rectified

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