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HOMESERVICE MANUALSHYUNDAI2014EQUUS SIGNATUREREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMSENGINE CONTROL SYSTEMHEATED OXYGEN SENSOR (HO2S)REPAIR PROCEDURESREMOVAL
2014 Hyundai Equus Signature

Repair procedures: Removal

2014 Hyundai Equus SignatureSECTION Removal

[Bank 1/Sensor 1] 

  1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
  2. Disconnect the heated oxygen sensor connector.
  3. Lift the vehicle.
  4. Remove the heater protector (B) from the catalytic converter after removing the bolt (A).
  5. Remove the heated oxygen sensor (C) with the spanner after lifting the heater protector (B).
    Fig 1: Identifying Heated Oxygen Sensor, Protector And Bolt
    G09789387Courtesy of HYUNDAI MOTOR AMERICA

[Bank 1/Sensor 2] 

  1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
  2. Disconnect the heated oxygen sensor connector (B).
  3. Lift the vehicle.
  4. Remove the heated oxygen sensor (A).
    Fig 2: Identifying Heated Oxygen Sensor And Connector
    G09789388Courtesy of HYUNDAI MOTOR AMERICA

[Bank 2/Sensor 1, Bank 2/Sensor 2] 

  1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
  2. Lift the vehicle.
  3. Disconnect the heated oxygen sensor connector (A).
  4. Remove the heated oxygen sensor (B).

    [Bank 2/Sensor 1] 

    Fig 3: Identifying Heated Oxygen Sensor (Bank 2/Sensor 1)
    G09789389Courtesy of HYUNDAI MOTOR AMERICA

    [Bank 2/Sensor 2] 

    Fig 4: Identifying Heated Oxygen Sensor And Connector (Bank 2/Sensor 2)
    G09789390Courtesy of HYUNDAI MOTOR AMERICA
RENDER: 1.0x

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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.