Check Engine Light with codes P0171 & P0172 on Isuzu Ascender

The Check Engine Light may illuminate with codes P0171 and P0172 stored. Our technicians tell us reprogramming the powertrain control module (PCM) and replacing the fuel pump may be necessary to correct this concern.

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Average mileage: (–)
3 model years affected: 2003, 2004, 2005
4 people reported this problem
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