2014 Hyundai Equus SignatureFACTORY OEM SERVICE PROCEDURE

Repair procedures: Removal

[Bank 1/Sensor 1]Β 

  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]Β 

  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]Β 

  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]Β 

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

    [Bank 2/Sensor 2]Β 

    Fig 4: Identifying Heated Oxygen Sensor And Connector (Bank 2/Sensor 2)
    G09789390Courtesy of HYUNDAI MOTOR AMERICA
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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