Kia Niro: Engine Control System / Heated Oxygen Sensor (HO2S) Description and operation
| Description |
Heated Oxygen Sensor (HO2S), consisting of zirconium and alumina, is installed on both upstream and downstream of the Manifold Catalytic Converter (MCC) to detect the air/fuel ratio and send it to the ECM. 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] (Linear)
Item
Specification
Heater Resistance (Ω)
2.5 - 4.0 [20°C(68°F)]
HO ...
Heated Oxygen Sensor (HO2S) Schematic diagrams
Circuit Diagram
Harness Connector
[Bank 1 / Sensor 1]
[Bank 1 / Sensor 2]
...
Other information:
Kia Niro (DE HEV) Owners Manual: Automatic ventilation
The system automatically selects the outside (fresh) air position when the climate
control system operates over a certain period of time (approximately 30 minutes)
in low temperature with the recirculated air position selected.
To cancel or reset the Automatic Ventilation
When the air conditio ...
Kia Niro 2017 (DE HEV) Service Manual: Special service tools
Special Service Tools
Tool Name / Number
Illustration
Description
Pressure cap pressure checker
0K253-G5100
Used for checking for pressure cap pressure and a coolant leak
...
