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Isuzu Ascender Problems

Check Engine Light with codes P0171 & P0172 on Isuzu Ascender

Problem Description and Possible Solution

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.

(5 people reported this problem)

Isuzu Ascender Vehicles With This Problem

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Average mileage: (–)
3 model years affected: 2003, 2004, 2005
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Brake problem? Or maybe a faulty head gasket cylinder?
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