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Home >> Chevrolet >> 1997 >> C3500 HD 6.5 F, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Controls - Tests W/Codes - 7.4L) >> Diagnostic Trouble Codes >> DTC P0103 - MAF Sensor Circuit High Frequency >> Circuit Description

Circuit Description

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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. DTC will set when the following conditions are present:

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