Ford Focus P Codes (Powertrain) P0100 - P0199 P0172

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Diagnostic Trouble Codes P0171, P0172, And P0420

2005 FORD FOCUS
I Have Replaced The Mass Air Flow Sensor And The New Code That Came Up Was The P0172 Along With The Other Repetitive Two Mentioned Above. I...
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Asked by GA13REAL

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