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Home >> Lexus >> 2013 >> LX 570 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes (P0010 - P0415)) >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem >> Description
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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) continue for more than 10 seconds (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 (TP) sensor voltage is 0.2 V or higher and 3.6 V or less.
(d) The average engine load value ratio is less than 0.85, or more than 1.15 (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) The average air-fuel ratio is less than -15%, or more than 15%.
  • Mass Air Flow (MAF) meter
  • Air induction system
  • PCV hose connections