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:
License plate light bulb replacement
1. Loosen the retaining screws with a philips head screwdriver.
2. Remove the soket by turning it connterclockwise.
3. Remove the bulb by pulling it straight out.
4. Install a new bulb.
5. Rei ...
Dimensions
*1 : with R16 tire
*2 : with R17 tire
*3 : with R18 tire ...
Ambient Temperature Sensor Repair procedures
Inspection
1.
Check the resistance of the ambient temperature sensor
between terminals 1 and 2 whether it changes by changing the ambient
temperature.
1. Ambient Sensor (+)2. Sensor ground
...
