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:
Instrument panel illumination
When the vehicle’s parking lights or headlights are on, push the illumination
control switch left or right to adjust the brightness of the instrument panel illumination.
The illumination ...
Audio Unit. Repair procedures
Removal
•
Take care not to scratch the center fascia panel and related
parts.
...
Driver's and passenger's front air bag
Driver’s front air bag
Your vehicle is equipped with a Supplemental Restraint (Air Bag) System and lap/shoulder
belts at both the driver and passenger seating positions. The indications of th ...
