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:
System controllers and functions
Audio Head Unit
1. (EJECT)
• Ejects the disc.
2.
Changes to FM/AM/XM mode.
Each time the key is pressed, the mode is changed in order of FM1 ➟ FM2
➟ AM ➟ XM1 ...
Seat Heater. Schematic Diagrams
Circuit Diagram
...
Jack and tools
The jack, jack handle, and wheel lug nut wrench are stored in the luggage compartment.
Pull up the luggage box cover to reach this equipment.
(1) Jack handle (2) Jack (3) Wheel lug nut wrench
...
