P0101 – Mass or Volume Air Flow A Circuit Range/Performance

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.
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