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P0101 Diagnostic Trouble Code Discussion for June 2008

Mass Airflow Sensor Performance

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Trouble Ticket Help Requests for DTC P0101
Help Request Posted
2004 Volvo S40 i 2.4L MIL Lamp on VIN: YV1MS38224
P0101: MAF signal fault. ... light code P0101 (130A) MAF signal fault, runs ok, Ck with scanner datas they are all good, replace with new MAF bought from Volvo Dealer, clear code road test for 30miles, finally light back on, same code, Ck signal, wiring, everything seems to be Okay, a...
June 02, 2008
2004 GMC Sierra 2500 HD SLE 6.6L MIL Lamp on, black smoke VIN: 1GTHK23284
P0101: MAF Sensor Performance. This vehicle sets a MAF code on every start up, 17 seconds after engine start. I can see exactly what it is doing but not why. The MAF GPS is too high at idle, 55-60 GPS. However, the voltage seems to be exactly correct at 1.25 to 1.35 on the scan tool, and 1....
June 04, 2008