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Home >> Toyota >> 2004 >> Corolla LE, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (SFI) - Diagnostics >> DTC P0101: Mass Or Volume Air Flow Circuit Range/Performance Problem >> Circuit Description
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Circuit Description

Refer to DTC P0100 .

DTC DETECTION CONDITION

DTC No. DTC Detection Condition Trouble Area
P0101 After engine is warmed up, conditions (a) to (d) continue for more than 10 seconds (2 trip detection logic):
  1. Engine speed less than 900 rpm
  2. Throttle valve fully closed
  3. Mass air flow sensor output greater than 2.2 V
  4. Engine coolant temperature higher than 70°C (158°F)
  • Mass air flow sensor
Conditions (a) and (b) continue for more than 6 seconds: (2 trip detection logic)
  1. VTA greater than 0.1 V
  2. Mass air flow sensor output less than 0.4 V
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