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Home › Hyundai › 2004 › Elantra GLS, Automatic › Repair and Diagnosis › Engine Performance › Engine Control Systems › Fuel System › DTC Trouble Shooting Procedures › DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control › Inspection Procedures › 2. Check Engine Coolant

2. Check Engine Coolant

  1. Check engine coolant level.
  2. Measure the specific gravity of the coolant with a hydrometer.

Is engine coolant normal? 

Yes: Go to next step.

No: Replace it.

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