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P0101 Diagnostic Trouble Code Discussion for December 2011

Mass Airflow Sensor Performance

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Trouble Ticket Help Requests for DTC P0101
Help Request Posted
2000 Chevrolet Silverado 1500 5.3L Hesitation, MIL Lamp on VIN: 2GCEK19T8Y
P0101: MAF Sensor Performance. Customer said runs rough cold and hesitates cold. Smoke tested intake and found leaking gaskets. repaired and cleared codes. Mass air flow did not come back but it still has high fuel trim and seems to idle a little funny. dont have time to wait for it to get ...
December 01, 2011
2003 Chevrolet Suburban 2500 LS 6.0L MIL Lamp on VIN: 3GNGC26U53
P0101: MAF Sensor Performance. At idle the long term trim is 0 to 2. The O2 sensors cycle rich and lean correctly. With my Genisys reading long term trim on a test drive, the LT trim goes up to 25 on both banks after accelerating for 4 seconds. It goes back down when you stop accelerating t...
December 06, 2011