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Home >> Toyota >> 2019 >> Highlander LE Plus, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 44 (SFI System [1AR-FE] - Diagnostic Codes - (Except Hybrid) (4 Of 8)) >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem [12/2013 - 11/2016] >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

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Both of the following conditions are met -
Average engine load value ratio Less than 0.76, or higher than 1.15 (varies with estimated engine load)
Average air fuel ratio Less than -20%, or higher than 20%
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