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Home >> Subaru >> 2005 >> Outback R VDC Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 23 (Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC)) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0128 Coolant Thermostat (Engine Coolant Temperature Below Thermostat Regulating Temperature) >> Diagnostic Method >> Judgment Value

Judgment Value

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

Malfunction Criteria Threshold Value
Battery voltage >/= 10.9 V
Estimated ambient air temperature >/= -7°C (19.4°F)
Engine coolant temperature at engine starting < 55°C (131°F)
Estimated engine coolant temperature >/= 75°C (167°F)
Engine coolant temperature < 75°C (167°F)
(Estimated - measured) engine coolant temperature > 30°C (86°F)
Vehicle speed >/= 30 km/h (19 MPH)
Vehicle speed >/= 30 km/h (19 MPH)

Time Needed for Diagnosis:  30 seconds

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



JUDGMENT VALUE

Malfunction Criteria Threshold Value
Battery voltage >/= 10.9 V
Estimated ambient air temperature >/= -7°C (19.4°F)
Thermostat malfunction diagnosis Not finished
Engine coolant temperature at engine starting < 55°C (131°F)
Engine coolant temperature >/= 75°C (167°F)
(Estimated - measured) engine coolant temperature </= 30°C (86°F)