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Home >> Toyota >> 2012 >> Matrix S, FWD, Standard Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (2AZ-FE) (Diagnostic Codes (P0010 - P0456) >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem >> Typical Malfunction Thresholds
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Typical Malfunction Thresholds

Both of following conditions 1 and 2 met -
1. Averaged engine load value ratio Less than 0.85, or more than 1.18 (varies with estimated engine load)
2. Averaged air-fuel ratio Less than -20%, or more than 20%