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Home >> Subaru >> 2006 >> Outback i, Automatic >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0126 Insufficient Engine Coolant Temperature For Stable Operation >> Diagnostic Method
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Diagnostic Method

Abnormality Judgment 

Judge as NG if the continuous time with the following conditions established is more than 2.5 seconds.

Judgment Value 

JUDGMENT VALUE CHART

Malfunction Criteria Threshold Value
Engine coolant temperature at the last engine stop - Minimum engine coolant temperature after the engine start < 2.5°C (4.5°F)
Fuel temperature at the last engine stop - fuel temperature 5°C (9°F)
Intake air temperature - fuel temperature 2.5°C (4.5°F)
Fuel temperature 35°C (54°F)

Normality Judgment 

When the following conditions are established, judged as OK.

Judgment Value 

JUDGMENT VALUE CHART

Malfunction Criteria Threshold Value
Engine coolant temperature at the last engine stop - Minimum engine coolant temperature after the engine start ≥ 2.5°C (4.5°F)

Time Needed for Diagnosis:  2.5 seconds

Malfunction Indicator Light Illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.