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Home >> Subaru >> 2005 >> Outback R VDC Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO)) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0128 Coolant Thermostat (Engine Coolant Temperature Below Thermostat Regulating Temperature) >> Diagnostic Method >> Abnormality Judgment

Abnormality Judgment

WARNING: This page is about a different variant/trim than selected.

Judge NG when the continuous time of completing the malfunction criteria below becomes more than 30 seconds.

Judgment Value 

JUDGMENT VALUE REFERENCE (ABNORMALITY)

Malfunction Criteria Threshold Value
Battery voltage >/= 10.9 V
Engine coolant temperature at engine starting < 55°C (131°F)
Engine coolant temperature < 70°C (158°F)
(Estimated - measured) coolant temperature > 30°C (86°F)
Vehicle speed >/= 30km/h (19 MPH)
Estimated coolant temperature >/= 70°C (158°F)
Estimated temperature >/= 7°C (19°F)

Time Needed for Diagnosis:  To be determined

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