LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2011 >> IS F >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0010-P014F) >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem >> Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P0101: Mass Air Flow Circuit Range / Performance Problem: Description

Refer to DTC P0102. Refer to DESCRIPTION .

DTC No. DTC Detection Condition Trouble Area
P0101 Conditions (a), (b), (c) (d), and (e) are met (2 trip detection logic):
(a) Engine running
(b) Engine coolant temperature 70°C (158°F) or higher
(c) Throttle position sensor voltage 0.24 to 3.6 V
(d) Average engine load value ratio less than 0.85%, or more than 1.22% (varies with estimated engine load)
Average engine load value ratio = Average engine load based on mass air flow meter output / Average engine load estimated from driving conditions
(e) Average air fuel ratio less than -20%, or more than 20%
  • Mass air flow meter
  • Intake system
  • PCV hose connections