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Home >> Subaru >> 2021 >> WRX STI >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (2.5L) (1 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control >> Execution Condition

Execution Condition

Secondary parameters Execution condition
Battery voltage ≥ 10.9 V
Engine speed ≥ 600 rpm
Reference engine coolant temperature > 80°C (176°F)
Engine coolant temperature at engine start < 80°C (176°F)
Perform the following condition A or B
Condition A:
Coolant temperature drop judgment
Completed
Coolant temperature drop Not detected
Condition B:
Coolant temperature drop judgment
Completed
Coolant temperature drop Detected
Engine speed integrated value > 1131rev
(Depending on the ambient temperature)