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As i found out on My Explorer, Bank 1 failure depends on the code being issued; If it is code PO171 orPO174, You have an issue with the oxygen sensors, due to moisture. Replace all oxygen sensors. I know, sounds expensive and it is, But vehicles depend on them for better fuel economy and proformance. Changing fuel filter, pcv valve and air filters may help but wont last. The mass air-flow sensor is also another item to keep clean since air-fuel mixture is determined by this equiptment.

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16y ago

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