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changed code parts and still won't run

Vehicle: 2006 ford 500 6 cyl

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HI there,

This code points towards an issue with the fuel injector being too lean on bank 1. Here is a list of every possible cause for this code.

P0171 FORD - Fuel Injection System Too Lean Bank 1

Read more: https://www.autocodes.com/p0171_ford.html

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