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Home >> Toyota >> 2012 >> Prius Two >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Except Plug-In) (Diagnostic Codes (P0010-P043F)) >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem >> Typical Malfunction Thresholds
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Typical Malfunction Thresholds

Both of the following conditions 1 and 2 are met -
1. Averaged engine load value ratio Less than 0.85, or more than 1.15 (varies with estimated engine load)
2. Averaged air fuel ratio Less than -20%, or more than 20%
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