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Hyundai Equus: Heated Oxygen Sensor (HO2S) Description and Operation - Engine Control System - Engine Control/Fuel System - Hyundai Equus VI 2009-2022 Service ManualHyundai Equus: 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 And Exhaust System in EM group). 3. Disconnect the ...

    Heated Oxygen Sensor (HO2S) Specifications
    Specification A/F Ratio (x)Output Voltage(V)RICH0.6 ~ 1.0LEAN0 ~ 0.4 ItemSpecificationHeater Resistance (x)Approx. 9.0 [21C(69.8F)] ...

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    Operating HomeLink
    To operate, simply press and release the programmed HomeLink button. Activation will now occur for the trained device (i.e. garage door opener, gate operator, security system, entry door lock, ho ...

    Troubleshooting
    Troubleshooting SymptomPossible causeRemedyOne lamp does not light(all exterior)Bulb or LED burned outReplace bulb or lamp assemblySocket, wiring or ground faultyRepair if necessaryHead lamps do ...

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