Kia Rio: Description

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)

...

Specification

HO2S [Bank 1/Sensor 1] Item Specification Heater Resistance (Ω) 2.4 ~ 4.0 [20°C(68°F)] HO2S [Bank 1/Sensor 2] A/F Ratio (λ) ...

See also:

Removal
1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Remove the resonator and the air intake hose (Refer to †...

Components Location
1. Converter housing 2. Shift cable bracket 3. Automatic transaxle case 4. Rear cover 5. Valve body cover 6. Manual control lever 7. Air breather hose 8. Inhibi ...

Inspection
1. Inspect the check valve in the vacuum hose.    Do not remove the check va ...