What are the best Ford repair shops?
RepairPal Certified shops can diagnose and repair your 2006 Ford Taurus. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
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PO171 indicates a lean air / fuel mixture - nowhere in the diagnostics does it state that the oxygen sensor is the culprit .. *Hands-on* TESTING is the only means of reaching a reliable repair solution..