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Home >> Scion >> 2013 >> iQ Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostic Codes P0010-P0343) (Except Electric) >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem >> Description

DTC P0101: Mass Air Flow Circuit Range / Performance Problem: Description

Refer to DTC P0102. Refer to DESCRIPTION .

DTC No. DTC Detection Condition Trouble Area
P0101 All of the following conditions continue for more than 10 seconds (2 trip detection logic):
(a) The engine is running.
(b) The engine coolant temperature is 70°C (158°F) or higher.
(c) The throttle position sensor voltage is 0.24 V or more, and less than 2 V.
(d) The average engine load value ratio is less than 0.8, or more than 1.15 (varies with estimated engine load).
Average engine load value ratio = Average engine load based on mass air flow meter output / Average engine load estimated from driving conditions
(e) The average air fuel ratio is less than -20% or more than 20%.
  • Mass air flow meter
  • Intake system
  • PCV hose connections