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Home >> Kia >> 2021 >> K5 GT >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - 2.5L >> Heated Oxygen Sensor (HO2S) >> Repair Procedures >> Inspection >> Inspection Component
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Inspection Component

  1. Disconnect the battery negative (-) terminal.
  2. Disconnect the Heated Oxygen Sensor (HO2S) connector.
  3. Measure resistance between the HO2S terminals.

    Front:  Pin 4 to Pin 5

    Rear:  Pin 3 to Pin 4

    Front 

    G13837519Courtesy of KIA MOTORS AMERICA, INC.

    Rear 

    G13837520Courtesy of KIA MOTORS AMERICA, INC.
  4. Compare the measured resistance with the specification.

    Specification: 

    Front: 2.8 - 4.5 Ω

    Rear: 5.4 - 6.6 Ω

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