DTC P0101: Mass Air Flow Sensor - Performance Problem: Condition
WARNING: This page is about a different car, the 2003 Suzuki XL-7. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0101 is set when intake air flow measured by MAF sensor is less than predetermined intake air flow. MIL is illuminated when ECM detects malfunction during 2 consecutive drive cycles.