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Home >> Toyota >> 2010 >> Prius PHV >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control (SFI) System (Diagnostic Codes (P0010-P0300)) (PHV) >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem >> Typical Enabling Conditions
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Typical Enabling Conditions

Monitor runs whenever following DTCs are not present None
Time after engine starts 5 seconds or more
Battery voltage 10.5 V or more
Throttle position (Throttle position sensor voltage) 0.2 to 2 V
Estimated Load 30 to 70%
Engine coolant temperature 70°C (158°F) or more
Mass air flow meter circuit (P0102, P0103) OK
Intake air temperature sensor circuit (P0112, P0113) OK
Engine coolant temperature sensor circuit (P0115, P0117, P0118) OK
Crankshaft position sensor circuit (P0335) OK
Throttle position sensor circuit (P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135) OK
EVAP system pressure sensor circuit (P0452, P0453) OK
EVAP leak detection pump (P2401, P2402) OK
EVAP system vent valve (P2419, P2420) OK