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What does the code P0171 bank one lean on a 2000 lesabre mean?

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Anonymous

 ∙ 11y ago
Updated: 8/21/2019

Too much air in comparison to fuel-check fuel pressure, if ok, look for a leaking/damaged vacuum hose, typically it will be the one attached to the air cleaner developed a split. Any unmetered air entering engine could cause this code

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Wiki User

 ∙ 11y ago

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