Hyundai Genesis: Engine Control System / Heated Oxygen Sensor (HO2S) Description and Operation
Heated Oxygen Sensor (HO2S) consists of zirconium and alumina
and is installed on upstream and downstream of the Manifold Catalyst
Converter (MCC).
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 the A/F radio is high or low, 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.

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 installati ...
Specification
A/F Ratio (?)Output Voltage(V)RICHMin. 0.8LEANMax. 0.1
ItemSpecificationHeater Resistance (?)3.0 ~ 4.1 [20°C(68°F)]
...
Other information:
Lift And Support Points
When heavy rear components such as suspension, fuel tank,
spare tire, tailgate and trunk lid are to be removed, place additional
weight in the luggage area before hoisting. When substantial weight is
removed from the rear of the vehicle, the cen ...
Replacement
Front
1.
Loosen the wheel nuts slightly. Raise the vehicle, and make sure it is securely supported.
2.
Remove the front wheel and tire (A) from the front hub.
Tightening torque:
88.3 ~ 107.9 N.m (9.0 ~ 11.0 kgf.m, 65.1 ~ 79.6 lb-ft)
Be careful not to ...