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Home >> Toyota >> 2017 >> 4Runner TRD Pro >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (P0010-P0128) >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem [08/2015 - ] >> Typical Malfunction Thresholds
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Typical Malfunction Thresholds

Both of the following conditions are met 1 and 2
1. Average engine load value ratio Less than 0.85, or more than 1.16 (varies with estimated engine load)
2. Average air-fuel ratio Less than -20%, or more than 20%