LEMON Manuals: Even more car manuals for everyone
Home >> Subaru >> 2015 >> WRX Limited, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC) (STI)) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0128 Coolant Thermostat (Engine Coolant Temperature Below Thermostat Regulating Temperature) >> Enable Conditions

Enable Conditions

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

Secondary Parameters Enable Conditions
<Judgment 1>
Battery voltage ≥ 10.9 V
Ambient air temperature ≥ -7 °C (19.4 °F)
Vehicle speed ≥ 30 km/h (18.6 MPH)
Estimated coolant temperature > Value of Map 1
Engine coolant temperature at engine start < 60 °C (140 °F)
<Judgment 2>
Battery voltage ≥ 10.9 V
Ambient air temperature ≥ -7 °C (19.4 °F)
Vehicle speed ≥ 30 km/h (18.6 MPH)
Estimated coolant temperature > Value of Map 2
Engine coolant temperature at engine start < 60 °C (140 °F)
<Judgment 3>
Battery voltage ≥ 10.9 V
Ambient air temperature ≥ -7 °C (19.4 °F)
Vehicle speed ≥ 30 km/h (18.6 MPH)
Estimated coolant temperature ≥ Value from Map 3
Engine coolant temperature at engine start < 60 °C (140 °F)

Map 1 

ENGINE COOLANT TEMPERATURE SPECIFICATION

Engine coolant temperature at engine starting
°C (°F)
-7 (19.4) 8 (46.4) 10 (50) 25 (77)
Estimated coolant temperature
°C (°F)
70 (158) 70 (158) 70 (158) 70 (158)

Map 2 

ENGINE COOLANT TEMPERATURE SPECIFICATION

Engine coolant temperature at engine starting
°C (°F)
-7 (19.4) 8 (46.4) 10 (50) 25 (77)
Estimated coolant temperature
°C (°F)
77.5 (171.5) 77.5 (171.5) 77.5 (171.5) 77.5 (171.5)

Map 3 

ENGINE COOLANT TEMPERATURE SPECIFICATION

Engine coolant temperature at engine starting
°C (°F)
-7 (19.4) 10 (50) 26 (78.8) 60 (140)
Estimated coolant temperature
°C (°F)
60 (140) 69 (156.2) 77.5 (171.5) 77.5 (171.5)