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Hyundai Equus: Heated Oxygen Sensor (HO2S) Troubleshooting

Second generation VI (2009–2024) / Hyundai Equus VI 2009-2024 Service Manual / Engine Control/Fuel System / Engine Control System / Heated Oxygen Sensor (HO2S) Troubleshooting

Signal Waveform

Fig.1) The signal waveforms of front HO2S(the upper) and heater(the lower) at idle

Fig.2) The signal waveforms of rear HO2S(the upper) and heater(the lower) at idle

Fig.3) Typical waveforms of front HO2S(the upper) and rear HO2S(the lower).

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 [21°C(69.8°F)] ...

Heated Oxygen Sensor (HO2S) Schematic Diagrams

Circuit Diagram ...

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