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:
Power Seat Control Switch. Repair procedures
Inspection
With the power seat switch in each position, make sure that continuity
exists between the terminals below. If continuity is not as specified, replace
the power seat switch.
A ...
Tilting the sunroof
When the sunshade is closed
If you push the sunroof control lever upward, the sunshade will slide all the
way open then the sunroof glass will tilt. To stop the sunroof movement at any point,
...
Starting the engine
WARNING
Always wear appropriate shoes when operating your vehicle. Unsuitable shoes
(high heels, ski boots,etc.) may interfere with your ability to use the brake, accelerator
pedal, and clutch (i ...
