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Home >> Toyota >> 2011 >> Highlander Hybrid Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 44 (Engine Control System (1AR-FE) (Diagnostic Codes (P0010-P0365) & Circuit Tests)) >> SFI System >> DTC P0101: Mass Air Flow Circuit Range / Performance Problem >> Description

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

WARNING: This page is about a different variant/trim than selected.

Refer to DTC P0102, refer to DESCRIPTION .

DTC No. DTC Detection Condition Trouble Area
P0101 All of the following conditions 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 sensor voltage is 0.24 to 2 V.
(d) The average engine load value ratio is less than 0.811, or more than 1.162 (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) The average air fuel ratio is less than -20% or more than 20%.
  • Mass air flow meter
  • Intake system
  • PCV hose connections