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Auto>General Auto

What causes check engine lightcode to read lean fuel mixture?

Anonymous

∙ 13y ago

Updated: 4/28/2022

If your code is PO171 or PO174 then there is a fuel delivery issue, If your fuel filter hasn't been replaced yet then do that first before replacing the fuel pump[The volume of sending fuel is insufficient]

Wiki User

∙ 13y ago

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