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Home >> Kia >> 2017 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (PHEV) >> Heated Oxygen Sensor (HO2S) >> Repair Procedures >> Inspection
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Repair Procedures: Inspection

  1. Turn the ignition switch OFF.
  2. Disconnect the HO2S connector.
  3. Measure resistance between the HO2S terminals 2 and 5 [B1/S1].
  4. Measure resistance between the HO2S terminals 3 and 4 [B1/S2].
  5. Check that the resistance is within the specification.

    HO2S [Bank 1/Sensor 1] 

    Specification  : 2.4 - 4.0 Ω [20°C(68°F)]

    HO2S [Bank 1/Sensor 2] (Binary type) 

    Specification  : Approx. 9.0 Ω [20°C(68°F)]

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