Mechanics

P0101 CHECK ENGINE

2004 GMC Sierra • V8 4WD Automatic • 100,000 miles

The check engine light keep reappearing after I erase it sometimes 6 to 8 months after. It is P0101. It runs well and does 'nt take more gaz than before. Is is a k 2500 hd with a 6 liters engine. What could be the problem. Thanks
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HENRY_15
June 21, 2012.



Erasing a code never fixes anything.

101 is a mass air flow circuit issue. You need to have someone monitor the mass air flow sensor under different condition to determine if it is wiring or the sensor itself.

Roy

ASEMaster6371
Jun 21, 2012.