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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 ...

See also:

Vapor hose and fuel filler cap
The vapor hose and fuel filler cap should be inspected at those intervals specified in the maintenance schedule. Make sure that a new vapor hose or fuel filler cap is correctly replaced. ...

Changing the coolant
Have coolant changed by an authorized EQUUS dealer according to the Maintenance Schedule at the beginning of this section. CAUTION Put a thick cloth around the radiator cap before refilling the co ...

Symbols used in this manual
Warnings, cautions and Notices WARNING A WARNING indicates a situation in which harm, serious bodily injury or death could result if the warning is ignored. CAUTION A CAUTION indicates a situat ...

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