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Home >> Ford >> 2011 >> Focus S, Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Powertrain DTC Charts & Descriptions - DTC P0001 Through DTC P0217 - (Except Diesel & Hybrid) >> DTC P0101: Mass Or Volume Air Flow A Circuit Range/Performance

DTC 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 airflow (MAF) sensor for concerns. This DTC sets if the PCM detects that the actual airflow is less or greater than the modeled airflow by greater than a calibrated value for 2.4 seconds.
Possible Causes: 
  • Restricted airflow
  • Intake air leak
  • Damaged MAF sensor
Diagnostic Aids:  Check the MAF sensor for contamination and the intake air system for leaks.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST DC .