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Home >> Toyota >> 2012 >> Prius Plug-in >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Plug-In) (Diagnostic Codes (P0010-P0454)) >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

Both of the following conditions are met -
Average engine load value ratio Less than 0.1, or higher than 3.5 (varies with estimated engine load)
Average air fuel ratio Less than -20%, or higher than 20%
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