Question about 2002 Ford SVT Focus
My engine light keeps coming on and when I come to a stop sign or stoplight it will stall. I did the self diagnostic check and the code that keeps coming up is p0171. What does this mean?
PO171 means that the MAF (MASS AIRFLOW SENSOR )sensor is dirty or deffective . Or that there is a leak in the vacume hose leading to the MAF sensor.Try cleaning the MAF sensor with brake cleaner .Be careful not to damage it.Check your Air filter also. Make sure it is clean. the reason the MAF sensor gets dirty is because of the filter. Also look for any leaks in the hose or hoses connected to it.It is located near the top of the air filter...little black box with wires coming out toward the front of the car.
Posted on Oct 28, 2008
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Posted on Jan 02, 2017
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