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Home >> Toyota >> 2013 >> Matrix Base, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 18 (Engine Control System (2AZ-FE) (Diagnostic Codes (P0010-P0456))) >> 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

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 V or higher, and less than 2 V.
(d) The average engine load value ratio is less than 0.85, or higher than 1.18 (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 higher than 20%.
  • Mass air flow meter
  • Intake system
  • PCV hose connections