Vehicle make/model 2004 Chevrolet  Malibu
Mileage = 100,000
Engine size = 2.2L
codes = PO171
work done prior = up keep
tip/donation no = buttonId
tech = JK
question = Can the Mass Air Flow sensor be tested with a multi-meter?






JK:
It can be done if you have a meter that can reads hertz. Best way is to look at data on a
scanner after checking the basics- power, ground, continuity of wires. A common cause
for this condition is a vacuum leak. There is also a PCM update available to correct a false
setting of this code.

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