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Home >> Hyundai >> 2009 >> Tucson GLS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures (2.0L) >> Troubleshooting for DTC >> P0138 O2 Sensor Circuit High Input (Bank 1/Sensor 2) >> Signal Circuit Inspection
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Signal Circuit Inspection

  1. Ignition "OFF"
  2. Disconnect HO2S connector.
  3. Ignition "ON"
  4. Measure resistance between terminal 2 of the sensor harness connector and chassis ground.

    Specification  : Approx. 0V

    Fig 1: Measuring Resistance Between Terminal 2 Of Sensor Harness Connector And Chassis Ground
    G06206397Courtesy of HYUNDAI MOTOR AMERICA
  5. Is voltage within the specification?

    YES 

    NO 

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