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The Ford Explorer and the Mercury Mountaineer were both updated for the 2006 model year on a new frame, produced by Magna International rather than Tower Automotive.

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bank one error code p0171

my 2006 explorer has the service light on and using a diagnostic computer I see error P0171. Cleaned the MAF and filters, don’t see any crack or leaks from the intake manifold. Could it be the plug wires?, oxygen sensors?

Most information on these trucks lead to another engine configuration from the one I have (4.0 SOHC).

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Here is some good information about how to fix this problem:

https://www.fixdapp.com/blog/p0171

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