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Home >> Kia >> 2017 >> Forte5 SX, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 1.6L T (1 Of 3) >> DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control >> System Inspection

System Inspection

■ Coolant Level Inspection 

  1. Check the cooling system coolant level.
  2. Is the coolant in the reservoir at the proper level?

    YES 

    • Go to next procedure.

    NO 

■ Thermostat Inspection 

  1. Check if the thermostat bypass valve is stuck in the open position or if the correct type of thermostat was installed.
  2. Check the valve opening temperature of the thermostat

    Specification:  88 ± 1.5°C (Valve opening temperature)/100°C (212°F) (Full opening temperature)

  3. Does the Thermostat operate properly?

    YES 

    NO