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Home >> Subaru >> 2013 >> Forester XT Touring >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 14 (Diagnostic Trouble Code (DTC) Detecting Criteria (H4DO)) >> 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 CONDITION

Secondary Parameters Enable Conditions
< Judgment 1 >
Battery voltage ≤ 10.9 V
Estimate ambient temperature ≤ -7 °C (19.4 °F)
Vehicle speed ≤ 30 km/h (18.6 MPH)
Estimated coolant temperature ≤ Value of Map 1
< Judgment 2 >
Battery voltage ≤ 10.9 V
Estimate ambient temperature ≤ -7 °C (19.4 °F)
Vehicle speed ≤ 30 km/h (18.6 MPH)
Estimated coolant temperature ≤ Value from Map 2
< Judgment 3 >
Battery voltage ≤ 10.9 V
Estimate ambient temperature ≤ -7 °C (19.4 °F)
Vehicle speed ≤ 30 km/h (18.6 MPH)
Estimated coolant temperature ≤ Value from Map 3
MAP 1

Engine coolant temperature at engine starting °C (°F) -7 (19.4) 8 (46.4) 10 (50) 25 (77)
Estimated coolant temperature °C (°F) 75 (167) 75 (167) 75 (167) 75 (167)
MAP 2

Engine coolant temperature at engine starting °C (°F) -7 (19.4) 8 (46.4) 10 (50) 25 (77)
Estimated coolant temperature °C (°F) 76.2 (169.2) 80.5 (176.9) 80.5 (176.9) 80.5 (176.9)
MAP 3

Engine coolant temperature at engine starting °C (°F) -7 (19.4) 10 (50) 25 (77) 79 (174.2)
Estimated coolant temperature °C (°F) 53.5 (128.3) 59 (138.2) 63.8 (146.8) 80.5 (176.9)