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.
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HOMESERVICE MANUALSHYUNDAI2013GENESIS COUPE 2.0T PREMIUMREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM (DTC TROUBLESHOOTING) (1 OF 3) - 2.0LDTC P0135: O2 SENSOR HEATER CIRCUIT (BANK 1 SENSOR 1)CONTROL CIRCUIT INSPECTION
2013 Hyundai Genesis Coupe 2.0T Premium
Control Circuit Inspection
2013 Hyundai Genesis Coupe 2.0T PremiumSECTION Control Circuit Inspection
- Ignition "OFF"
- Disconnect HO2S connector.
- Ignition "ON", Engine "OFF".
- Measure voltage between Heater Control terminal of the HO2S harness connector and chassis ground.
- Is voltage within the specification?
YES
- Go to "Component Inspection " procedure.
NO
- Repair as necessary and go to "Verification of Vehicle Repair " procedure.NOTE: HO2S must have a clean air reference to function properly. The air is obtained by way of the sensor wire(s). Do not attempt to repair the wire(s), connector, or the terminals.
RENDER: 1.0x
NO RELATED
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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.