Kia Stinger CK Quiz
Engine Control System/Fuel System

Heated Oxygen Sensor (HO2S)

In this manual: Engine Control System/Fuel System
General Information — 8Maintenance — 27Engine Mechanical System — 47Engine Electrical System — 19Emission Control System — 12Engine Control System/Fuel System — 51Automatic Transmission System — 34All-Wheel Drive (AWD) System — 7Drive Shaft and Axle — 15Suspension System — 25Steering — 8Restraints — 19Brake System — 22Body (Interior and Exterior) — 47Front Seat Belt — 63Body Electrical System — 99Windshield Wiper/Washer — 11Heating, Ventilation, and Air Conditioning — 32
12steps
~82min
4/5difficulty
2special tools
02040608010049.136N·mlb·ft
Tightening torque found on this page
Done 0 of 12

Specifications

Specification

HO2S [Bank 1 / Sensor 1]

Item Specification
Heater Resistance (Ω) 2,5–4,0 [20 °C]

HO2S [Bank 1 / Sensor 2]

Item Specification
Heater Resistance (Ω) 3,3–4,1 [20 °C]

Description and Operation

Description

The Heated Oxygen Sensor (HO2S), consisting of zirconia and alumina, is installed both before and after the catalytic converter to detect the air-fuel ratio and send it to the ECM.

The sensor must be heated to operate properly. To heat it, the sensor has a heater that is controlled by the ECM using a duty cycle signal. When the exhaust gas temperature is below a specified value, the heater warms up the sensor tip.

Circuit Diagrams

Wiring Diagram

Harness Connector

[Bank 1/Sensor 1]

[Bank 1/Sensor 2]

Repair Procedures

Inspection

  1. Turn the ignition off.

  2. Disconnect the HO2S connector.

  3. Measure the resistance between terminals 4 and 5 [B1/S1] of the HO2S.

    Specification: 2.5 - 4.0 Ω [20 °C]

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

    Specification: 3.3 - 4.1 Ω [21 °C]

  5. Make sure the resistance is within specification.

Removal

[Bank 1/Sensor 1]

  1. Turn the ignition switch OFF and disconnect the negative (-) battery terminal.

  2. Disconnect the connector (A) and remove the sensor (B).

[Bank 1/Sensor 2]

  1. Turn the ignition switch OFF and disconnect the negative (-) battery terminal.

  2. Disconnect the connector (A).

  3. Raise the vehicle.

  4. Remove the catalytic converter bracket (A).

  5. Remove the sensor (B).

Installation

  1. Install in the reverse order of removal.

    Heated Oxygen Sensor:

    39,2–49 N·m

Test yourself

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