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Home >> GMC >> 1996 >> Forward Control 4.3 Z, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - P Series (Gasoline) >> Diagnostic Trouble Codes >> DTC P0103 - MAF Sensor Circuit High Frequency >> Circuit Description
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Circuit Description

Mass Airflow (MAF) sensor measures amount of air entering engine at a given time to determine fuel delivery. MAF sensor produces a frequency signal of 2000 Hz at idle to 8000 Hz at maximum engine load. DTC will set if MAF signal is greater than possible range of a normally-operating MAF sensor.