![]() ![]() Dirty or contaminated mass air flow sensor.Potential causes for this trouble code may include: Engine hard start or stalling after it starts.Malfunction indicator lamp (MIL) illumination (a.k.a.P0104 Mass or Volume Air Flow "A" Circuit Intermittent.Or Volume Air Flow "A" Circuit High Input P0100 Mass or Volume Air Flow "A" Circuit Malfunction.Note: Some MAF sensors also incorporate an air temperature sensor, which is another value used by the PCM for optimal engine operation.Ĭlosely related MAF circuit trouble codes include: Is not within a predetermined expected range of the calculated MAF value. The PCM detects that the actual MAF sensor frequency signal The powertrain control module (PCM) uses that reading along with other sensor parameters to ensure proper fuel delivery at any given time for optimum power and fuel efficiency.īasically this P0101 diagnostic trouble code (DTC) means that there is a problem with the Mass Air Flow (MAF) ![]()
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