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Home >> Toyota >> 2018 >> 4Runner TRD Pro >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (P0010-P0128) >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem [08/2015 - ] >> Typical Enabling Conditions
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Typical Enabling Conditions

Monitor runs whenever the following DTCs are not present None
Throttle position (Throttle position sensor voltage) 0.2 V or higher, and less than 2 V
Time after engine start 5 seconds or more
Battery voltage 10.5 V or higher
Engine coolant temperature 70°C (158°F) or higher
Estimated load 30% or more, and less than 70%
Mass air flow meter circuit fail (P0102, P0103) Not detected
Intake air temperature sensor circuit fail (P0112, P0113) Not detected
Engine coolant temperature sensor circuit fail (P0115, P0117, P0118) Not detected
Crankshaft position sensor circuit fail (P0335) Not detected
Throttle position sensor circuit fail (P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135) Not detected
Canister pressure sensor circuit fail (P0452, P0453) Not detected
Leak detection pump fail (P2401, P2402) Not detected
Vent valve fail (P2419, P2420) Not detected