What do error codes P0171 and P0174 indicate?

Asked by May 24, 2017 at 08:01 PM about the 2005 Ford Escape XLT 4WD

Question type: Maintenance & Repair

1 Answer

257,835

A lean condition, which indicates a vacuum leak in most instances. Check all your hoses and gaskets. Run the car and spray some carb cleaner around to hear if the idle increases. You can also perform a smoke test if you can't pinpoint the area.

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