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P0130 is O2 sensor circuit malfunction (bank 1 sensor 1) and P0171 is system too lean (bank 1) There are several things that could cause these error codes. Best thing would be to have a professional who can look at the vehicle, put it on a lift, and determine the likely cause. There are so many potential causes that would be obvious to someone who can see the car. If it were my car, and I was determined to fix it myself, I would start by replacing the front oxygen sensor, assuming that it has not been replaced recently. BTW, I believe that your car is an Impreza? --Ken

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Q: 2002 Subaru Inpresa is reading code PO171and PO130 how do you FIX it thanks mar?
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2002 subaru impresa is reading code po171 how do you FIX it thanks mar?

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