Hyundai Azera: Heated Oxygen Sensor (HO2S) Description and Operation
Fifth generation HG (2011–2025) / Hyundai Azera 2011-2025 Service Manual / Engine Control/Fuel System / Engine Control System / Heated Oxygen Sensor (HO2S) Description and Operation
Fifth generation HG (2011–2025) / Hyundai Azera 2011-2025 Service Manual / Engine Control/Fuel System / Engine Control System / Heated Oxygen Sensor (HO2S) Description and Operation
| Description |
Heated Oxygen Sensor (HO2S) consists of the zirconium and the
alumina and is installed on upstream and downstream of the Warm-up
Catalytic Converter (WCC).
After it compares oxygen consistency of the atmosphere with
the exhaust gas, it transfers the oxygen consistency of the exhaust gas
to the ECM. When A/F ratio is rich or lean, it generates approximately
1V or 0V respectively. In order that this sensor normally operates, the
temperature of the sensor tip is higher than 370°C (698°F). So it has a
heater which is controlled by the ECM duty signal.
When the exhaust gas temperature is lower than the specified value, the heater warms the sensor tip.
Knock Sensor (KS) Repair procedures
Removal
[Knock Sensor #1 (Bank 1)]
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.
Disconnect the knock sensor connector (A).
3.
Remove the intake man ...
Heated Oxygen Sensor (HO2S) Specifications
Specification
[Bank 1 / sensor 2, Bank 2 / sensor 2]
A/F Ratio (?)Output Voltage(V)RICHMin. 0.8LEANMax. 0.1
ItemSpecificationHeater Resistance (?)3.3 ~ 4.1[20°C(68°F)]
[Bank 1 / sensor 1, ...
See also:
Operation in foreign countries
If you are going to drive your vehicle in another country, be sure to:
Observe all regulations regarding registration and insurance.
Determine that acceptable fuel is available.
...
Troubleshooting
Troubleshooting
SymptomSuspect areaEngine will not start or stuggle to startVapor hose damaged or disconnectedEngine stuggle to startMalfunction of the Purge Control Solenoid ValveRough idle or e ...
Intake Actuator Description and Operation
Description
1.
The intake actuator is located at the blower unit.
2.
It regulates the intake door by signal from control unit.
3.
Pressing the intake selection switch will shift between re ...
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