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Home >> Hyundai >> 2013 >> Genesis Coupe 2.0T, Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (DTC Troubleshooting) (1 Of 3) - 2.0L >> DTC P0135: O2 Sensor Heater Circuit (Bank 1 Sensor 1) >> Control Circuit Inspection
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Control Circuit Inspection

  1. Ignition "OFF"
  2. Disconnect HO2S connector.
  3. Ignition "ON", Engine "OFF".
  4. Measure voltage between Heater Control terminal of the HO2S harness connector and chassis ground.
    Fig 1: Measuring Voltage Between Control Terminal Of HO2S Heater Harness Connector And Chassis Ground
    G00541020Courtesy of HYUNDAI MOTOR CO.
  5. Is voltage within the specification?

    YES 

    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.
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