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Home >> Toyota >> 2021 >> Sequoia TRD Pro >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (3UR-FE) - Diagnostic Codes (1 Of 9) >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem [08/2017 - 08/2019] >> Description
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DTC P0101: Mass Air Flow Circuit Range / Performance Problem [08/2017 - 08/2019]: Description

Refer to DTC P0102 (Refer to DTC P0102: Mass or Volume Air Flow Circuit Low Input; DTC P0103: Mass or Volume Air Flow Circuit High Input [08/2017 - 08/2019] ).

DTC Code DTC Detection Condition Trouble Area
P0101 Conditions (a), (b), (c), (d) and (e) continue for more than 10 seconds (2 trip detection logic):
(a) Engine running
(b) Engine coolant temperature 70°C (158°F) or higher
(c) Throttle Position (TP) sensor voltage 0.2 V or more and less than 3.6 V
(d) Average engine load value ratio less than 0.85, or more than 1.47 (varies with estimated engine load)
Average engine load value ratio = Average engine load based on MAF meter output / Average engine load estimated from driving conditions
(e) Average air-fuel ratio less than -15%, or more than 15%
  • Mass Air Flow (MAF) meter
  • Air induction system
  • PCV hose connections