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Home >> Toyota >> 2009 >> Yaris Base, 4D Hatchback >> Repair and Diagnosis >> External Pages >> Different car >> Section 22 (Engine Control System) >> SFI System >> DTC P0101 Mass Air Flow Circuit Range / Performance Problem >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

WARNING: This page is about a different car, the 2009 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

Case 1: Mass air flow meter rationality (High voltage) 

TYPICAL MALFUNCTION THRESHOLDS

Mass air flow meter voltage More than 1.34 V (varies with throttle position)

Case 2: Mass air flow meter rationality (Low voltage) 

TYPICAL MALFUNCTION THRESHOLDS

Mass air flow meter voltage Less than 0.85 V (varies with throttle position)