Hyundai Sonata: Heated Oxygen Sensor (HO2S). Description and Operation
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.

Knock Sensor (KS). Repair procedures
Removal
1.
Turn the ignition switch OFF and disconnect the battery negative
(-) cable.
2.
Remove the intake manifold (Refer to “Intake ...
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 [Bank 1/Sensor 2 ...
See also:
Rear Glass Defogger Switch. Repair procedures
Inspection
1.
The rear glass defogger switch inputs can be checked using the
GDS.
2.
To check the input value of rear glass defogger switc ...
Side Body. Body Repair
Side Body A
Side Body B
...
Interior overview
1. Door lock/unlock button
2. Outside rearview mirror control switch
3. Central door lock switch
4. Power window lock switch
5. Power window switches
6. Hood release lever
7. Parking brake
8. ...
