Subaru IMPREZA GD 2007 Series Manual page 1843

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Diagnostic Trouble Code (DTC) Detecting Criteria
GENERAL DESCRIPTION
X: DTC P0126 INSUFFICIENT ENGINE COOLANT TEMPERATURE FOR STABLE
OPERATION
1. OUTLINE OF DIAGNOSIS
Judge as NG when the output of the engine coolant temperature does not fluctuate.
Judge as NG when the engine coolant temperature sensor output does not change whereas engine coolant
seemed to change from the view point of the driving condition.
2. COMPONENT DESCRIPTION
(1) Connector
(2) Thermistor element
3. ENABLE CONDITION
Secondary Parameters
Battery voltage
Refueling from the last engine stop till
the current engine start
Fuel level
Engine coolant temperature at the last
engine stop
4. GENERAL DRIVING CYCLE
Perform the diagnosis only once after starting the engine.
(1)
(2)
(A) Resistance value (kΩ)
(B) Temperature °C (°F)
Enable Conditions
≥ 10.9 V
None
≥ 15 2 (3.96 US gal,
3.3 Imp gal)
≥ 70°C (158°F) and <
95°C (203°F)
GD(H4DOTC)-52
(A)
(B)
EN-02917