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Continue to ChatTroubleshooting PO171 Code in Ford Focus: Tips for Diagnosing Lean Bank 1 Condition - https://54classicchevy.com/po171-code-ford-focus/
Troubleshooting PO171 Code in Ford Focus: Tips for Diagnosing Lean Bank 1 Condition - https://54classicchevy.com/po171-code-ford-focus/