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Home >> Lexus >> 2017 >> RX 450h Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes) (1 Of 8) >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem [10/2015 - 08/2016] >> Typical Malfunction Thresholds
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Typical Malfunction Thresholds

Both of the following conditions are met -
Average engine load value ratio Less than 0.85, or higher than 1.12 (varies with estimated engine load)
Average air fuel ratio Less than -14%, or higher than 20%
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