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Home >> Scion >> 2012 >> tC Standard Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0010-P0504)) >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

Both conditions 1 and 2 met -
1. Average engine load ratio Less than 0.83, or more than 1.15 (varies with estimated engine load)
2. Average air-fuel ratio Less than -20%, or more than 20%
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