Nice 2009 Ford Focus Mass Air Flow Sensor : Online Courses - Learn Anything, On Your Schedule. The maf sensor is often quite expensive, as you sometimes have to replace. A mass air flow sensor costs $100 and $400 and you can expect the labor costs to be $40 to $150.
Manifold absolute pressure (map) sensor intake system. The car cranks but doesent start. By paul22law, february 2, 2017 in ford focus club.