May 14, 2010My check engin light came on so I pluged in my superchips and scaned it. It read as follows: "P0. 101 mass/volume air flow circ range/Perf". What should I do? Does this mean I have to replace the Mass air flow sensor on the air intake, or is there another sensor some where els? I would look it up in shop book but I`m still away for school and left it at home. If any one has the shop manual I`m sure its in there. Thanks guys really appriciate it.