I am looking for answers about code issues.

Asked by Rick Apr 24, 2021 at 02:50 PM about the 2001 Ford Explorer Sport Trac 4WD Crew Cab

Question type: Maintenance & Repair

Looking for answers on code issues. Engine light came on and stayed on.
checked gas cap. All good. I was told at a local auto repair shop that the code
was 169, but our local Ford dealer noted on the invoice that it was PO171.

1 Answer
158,475

James answered 3 years ago

P0171 is a lean air to fuel mixture on the side of the engine where the number one cylinder is. There's a service bulletin about this that your Ford Dealer should have known about. The most likely cause is a leaking upper plenum (intake manifold). Hope that helps! Jim

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