Hyundai i20 Quiz
Engine/Fuel Control System

Heated Oxygen Sensor (HO2S) Repair Procedures

In this manual: Engine/Fuel Control System
General Information — 17Engine Mechanical System — 79Engine Electrical System — 50Emission Control System — 22Engine/Fuel Control System — 107Clutch System — 27MANUAL TRANSMISSION SYSTEM — 21Drive Shaft and Axle — 18Suspension System — 29Steering System — 21Restraint — 41Braking System — 53Body Work (Interior and Exterior) — 190Body Electrical System — 181Heating, Ventilation and Air Conditioning — 58
11steps
~71min
4/5difficulty
1special tools
02040608010049.136N·mlb·ft
Tightening torque found on this page
Done 0 of 11

Inspection

  1. Turn the ignition switch to the OFF position.
  2. Disconnect the HO2S connector.
  3. Measure the resistance between terminals 2 and 5 [B1/S1] of the HO2S.

    Specification: 2.4 ~ 4.0 [20 °C]

  4. Measure the resistance between terminals 3 and 4 [B1/S2] of the HO2S.

    Specification: Approximately 9.0 [20 °C]

  5. Check that the resistance is within specification.

DEPOSIT

[Bank 1 / Sensor 1]

  1. Turn the ignition switch to the OFF position and disconnect the negative (-) battery terminal.
  2. Disconnect the connector (A).
  3. Remove the heated oxygen sensor (A).

[Bank 1 / Sensor 2]

  1. Turn the ignition switch to the OFF position and disconnect the negative (-) battery terminal.
  2. Disconnect the connector (A).
  3. Remove the heated oxygen sensor (A).

REMEDY

  1. To install, perform the removal procedure in reverse. Heated oxygen sensor: 39.2 ~ 49 N·m

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