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My Santa Fe has a code P0102. This is the MAF sensor (at least on my research). when the car is first running, it 'bucks" or misfires a couple of times, then it runs great.

Is there a way to test specifically the MAF sensor? Rather than just purchasing one ($150.00), :rolleyes: and finding out that it is something else.

According to autozone it could be one of the following:

MAF sensor signal circuit is open or shorted to ground
MAF sensor power (VREF) circuit is open or shorted to ground
MAF sensor is damaged or has failed
PCM has failed

How do I test 1 & 2? How can I be sure its #3 without spending $150? What are the odds that the PCM failed?

Thank you in advance for your time answering my question.

Rafael