Subaru IMPREZA GD 2007 Series Manual page 1815

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Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
K: DTC P0101 MASS OR VOLUME AIR FLOW CIRCUIT RANGE/PERFORMANCE
1. OUTLINE OF DIAGNOSIS
Detect the malfunction of air flow sensor output properties.
Judge as a low side NG when the air flow voltage indicates a small value regardless of running in a state
where the air flow voltage increases. Judge as a high side NG when the air flow voltage indicates a large val-
ue regardless of running in a state where the air flow voltage decreases. Judge as air flow sensor property
NG when either Low side or High side becomes NG.
2. COMPONENT DESCRIPTION
(1)
(A)
(1) Air flow sensor
(2) Intake air temperature sensor
3. ENABLE CONDITION
Secondary Parameters
Engine coolant temperature
4. GENERAL DRIVING CYCLE
Perform the diagnosis continuously after idling.
(2)
(3) Voltage (V)
(4) Amount of intake air (kg/s)
Enable Conditions
≥ 70°C (158°F)
GD(H4DOTC)-24
(3)
(4)
(A) Air
EN-01766