LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2007 >> SC 430 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> 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 P0100  .

DTC DETECTION CONDITION CHART

DTC No. DTC Detection Condition Trouble Area
P0101 Conditions (a), (b), (c), (d) and (e) are met (2 trip detection logic):
  1. Engine running
  2. Engine coolant temperature 70°C (158°F) or higher
  3. Throttle Position (TP) sensor voltage 0.24 V or more
  4. Average engine load value ratio less than 0.85, or more than 1.83 (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
  5. Average air-fuel ratio less than -20%, or more than 20%
MAF meter