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Home >> Kia >> 2017 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 3) (PHEV) >> DTC P0125-00: Insufficient Coolant Temperature For Closed Loop Fuel Control >> System Inspection >> Visual Inspection
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Visual Inspection

  1. Correct Engine Coolant type and level
  2. Engine Coolant contamination.
  3. Damaged Engine Coolant Cap.
  4. Clogged Engine Coolant line.
  5. Has any problems been found?

    YES 

    NO