|P0101 – Mass or Volume Air Flow A Circuit Range/Performance|
|Description: The powertrain control module (PCM) continuously monitors the mass air flow (MAF) sensor for concerns. This DTC sets if the PCM detects that the actual air flow is less or greater than the modeled air flow by more than a calibrated value for 2.4 seconds.
Possible Causes: • Restricted air flow
• Intake air leak
• Damaged MAF sensor
Diagnostic Aids: Check the MAF sensor for contamination and the intake air system for leaks.