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Home >> GMC >> 1997 >> Forward Control 4.3 W, L35, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 58 (Engine Controls - Tests W/Codes - 4.3L) >> Diagnostic Trouble Codes >> DTC P0102 - MAF Sensor Circuit Low Frequency >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 1997 GMC Savana, 1997 Chevrolet Chevy Van, and 1997 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

Mass Airflow (MAF) sensor measure 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 less than possible range of a normally operating MAF sensor. DTC will test when the following conditions are present:

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