![]() Your car or truck or SUV may idle rough and stall.No power when you accelerate the car or truck.Lean and/or Rich diagnostic trouble code(s).P0103: MAF Sensor Circuit High Frequency.P0102: MAF Sensor Circuit Low Frequency.P0101: MAF Sensor System Performance Problem.A MAF sensor diagnostic trouble code (DTC) stored in your vehicle computer's memory.The most obvious one is that the check engine light (CEL) will be on on your instrument cluster and driving you nuts. How To Test The MAF Sensor on 3.1L, 3.3L, and 3.8L Buick, Oldsmobile, Pontiac (1988-1996).How To Test The GM MAF Sensor: Buick, Chevy, Olds, Pontiac 3.8L V6 Engines (1996-2005).How To Test The GM Mass Air Flow Sensor (Early Type): Buick, Chevy, Olds, Pontiac 3.1L, 3.4L, 4.3L, 5.0L, 5.7L V6 Engines (1996-2005).How To Test The GM Mass Air Flow Sensor: GMC Savana Van and Chevy Express Van 4.3L, 5.3L, 6.0L Engines (2003-2008).Now, in case this is not the article you're looking for, there are also 3 other GM MAF sensor test articles: P0101 -What Does It Mean? (1999-2006 V8 Chevrolet Silverado, GMC Sierra).You can find this tutorial in Spanish here: Cómo Probar El Sensor MAF (GM 4.8L, 5.3L, 6.0L, 8.1L) (at: ). More 4.8L, 5.3L, And 6.0L GM Tutorials.Oscilloscope Waveform Of The GM MAF Sensor.TEST 3: Testing The MAF Signal Circuit. ![]() TEST 1: Testing The Power Circuit For 12 Volts.Circuit Descriptions Of The MAF Sensor Connector. ![]()
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