Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSHYUNDAI2013GENESIS COUPE 2.0T R-SPECREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM (DTC TROUBLESHOOTING) (1 OF 3) - 2.0LDTC P0125: INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROLMONITOR GDS DATA

2013 Hyundai Genesis Coupe 2.0T R-Spec

Monitor GDS Data

2013 Hyundai Genesis Coupe 2.0T R-SpecSECTION Monitor GDS Data

Allow the engine to cool completely
Run the cold engine at idle for 5 minutes and observe cooling fan status.
NOTE: Ensure that the A/C is OFF
Check the engine coolant temperature parameter at idle with the scantool.
Is the engine coolant temperature increase to above 50°C (122°F)
YES
- Go to "TERMINAL AND CONNECTOR INSPECTION " procedure
NO
- Go to next step.
Are the cooling fans running when engine coolant temperature is low (less than approximately 98°C (208°F)) with A/C OFF?
YES
- Check for short circuit in cooling fan harness or cooling fan relay. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- - With ignition "ON", Install scantool and select "COOLING FAN RELAY" on the Actuation Test mode.
  - Activates "COOLING FAN RELAY" by click "Start" button.
  - Repeat this procedure 4 or 5 times to ensure cooling fan reliability.
  - If cooling fan works properly, Go to the next Inspection procedure.
  - If NG, check for intermittent fault caused by poor contact in the sensor's and/or ECM's connector.
    Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.