Kia Sportage: Engine Control System / Heated Oxygen Sensor (HO2S) Description and operation

Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed both upstream and downstream of the Manifold Catalytic Converter. The sensor output voltage varies in accordance with the air/fuel ratio.

The sensor must be hot in order to operate normally. To keep it hot, the sensor has a heater which is controlled by the ECM via a duty cycle signal. When the exhaust gas temperature is lower than the specified value, the heater warms the sensor tip.

Heated Oxygen Sensor (HO2S) Specifications

Specification HO2S [Bank 1/Sensor 1] Item Specification Heater Resistance (Ω) 2.5 - 4.0 [20°C(68°F)] HO2S ...

Heated Oxygen Sensor (HO2S) Schematic diagrams

Circuit Diagram Harness Connector [Bank 1 / Sensor 1] [Bank 1 / Sensor 2] ...

Other information:

Kia Sportage QL (2015-2019) Service Manual: Catalytic Converter Repair procedures

Removal WCC 1. Remove the exhaust manifold. (Refer to Engine Mechanical System - "Exhaust Manifold") UCC 1. Remove the muffler. (Refer to Engine Mechanical System - "Muffler") ...

Kia Sportage QL (2015-2019) Service Manual: Purge Control Solenoid Valve (PCSV) Schematic diagrams

Circuit Diagram Terminal Information Terminal Illustration Terminal Function No. Function Connected to 1 Battery power (B+) Main Relay 2 ...