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:
Emergency starting
Connect cables in numerical order and disconnect in reverse order.
Positive (+) battery terminal on
your vehicle
Positive (+) battery terminal on
the booster battery
Negative (-) battery ter ...
Pre-tensioner seat belt
Your vehicle is equipped with driver's and front passenger's pre-tensioner seat
belts. The purpose of the pretensioner is to make sure that the seat belts fit tightly
against the occupan ...
Closing the fuel filler lid
1. To install the cap, turn it clockwise until it clicks one time. This indicates
that the cap is securely tightened.
2. Close the fuel filler lid and push it lightly and make sure that it is secure ...
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