It's been my experience that P0102 generally means that the MAF sensor has failed. Unless one can find an actual "break" in the wiring that would cause a low voltage reading - the sensor needs to be replaced . With that said, a person has three options with regard to replacing the sensor:
1. Purchase an oem sensor directly from a dealership - $600-$700
2. Get the equivalent Bosch replacement part - $250-$300
3. Source an aftermarket "knock-off" that is well made - $89-$125 .
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Don't worry … I've got the microfilm.
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