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Home >> Lexus >> 2015 >> RC 350 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2GR-FSE) - Diagnostic Codes (1 Of 5) >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem [09/2014 - 11/2017] >> Description
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DTC P0101: Mass Air Flow Circuit Range / Performance Problem [09/2014 - 11/2017]: Description

Refer to DTC P0102.

Refer to DESCRIPTION 

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0101 Mass Air Flow Circuit Range / Performance Problem All of the following conditions continue (2 trip detection logic):
(a) The engine is running.
(b) The engine coolant temperature is 70°C (158°F) or higher.
(c) The throttle position sensor voltage is 0.2 V or higher, and less than 2 V.
(d) Average engine load value ratio is less than 0.85, or higher than 1.15*1 or 1.19*2 (varies with estimated engine load).
Average engine load value ratio = Average engine load based on mass air flow meter sub-assembly output / Average engine load estimated from driving conditions
(e) Average air fuel ratio is less than -20%, or higher than 20%
  • Mass air flow meter sub-assembly
  • Intake system
  • PCV hose connections
Comes on DTC stored
  1. *1: for AWD models
  2. *2: for 2WD models