P0102 - mass or volume air flow circuit low input, 99 Boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Johnny Danger · 07-02-2012, 06:35 AM

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 .

mrjr1000 · 07-02-2012, 05:44 PM

P0120 appeared about six months ago. Cleaned air filter, tightened all intake connections, pulled MAF and used CRC MAF cleaner. Worked well for about 600 miles.

Repeated cleaning a couple of times as CEL/code came back couple of times.

Purchased new non OEM MAF from link provided by Johnny Danger. No codes to date and no CEL Also remedied a hesitation I had between 3500 and 5000 rpm.