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Home >> Subaru >> 2016 >> WRX STI Series.HyperBlue >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0125 Insufficient Coolant Temperature For Closed Loop Fuel Control >> Diagnostic Method
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Diagnostic Method

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Engine coolant temperature < -15 °C (5 °F)
Elapsed time after starting the engine ≥ Value from Map
((Smaller value either one of engine coolant temperature and intake air temperature at engine start) ≥ -23.3°C (-9.9°F))  
or  
((Smaller value either one of engine coolant temperature and intake air temperature at engine start) < -23.3°C (-9.9°F))  
TEMPERATURE SPECIFICATION - MAP

  Smaller value either one of engine coolant temperature and intake air temperature at engine start °C (°F)
-40 (-40) -23.4 (-10.1) -23.3 (-9.9) 0 (32) 20 (68) 40 (104) 60 (140) 80 (176)
Percentage of time when engine is at stop against time elapsed since engine start 0.0 300000 300000 120000 120000 120000 120000 120000 120000
0.3 300000 300000 120000 120000 120000 120000 120000 120000
0.6 300000 300000 120000 120000 120000 120000 120000 120000
1.0 300000 300000 120000 120000 120000 120000 120000 120000
ms

Time Needed for Diagnosis:  120 or 300 seconds

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