Hyundai Santa Fe: Heated Oxygen Sensor (HO2S). Description and Operation - Engine Control System - Engine Control/Fuel SystemHyundai Santa Fe: Heated Oxygen Sensor (HO2S). Description and Operation

Hyundai Santa Fe DM 2013-2018 Service Manual / Engine Control/Fuel System / Engine Control System / 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 Engine Mechanical System - "Intake Manifold") 3. Disconnect the ...

Heated Oxygen Sensor (HO2S). Specifications
Specification HO2S [Bank 1/Sensor 1] Item Specification Heater Resistance (Ω) 2.5 ~ 4.0 [20°C(68°F)] HO2S [Bank 1/Sensor 2] A/F Ratio (λ) Output Voltage(V) RICH Approx. 0.9 LEAN Approx. 0.04 ...

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Head Lamps. Repair procedures
Inspection 1. Check-points upon head lamp failure (HID) (1) Check the battery voltage. (Low beam will be on when the battery voltage above 9V.) (2) Check the fuse and relay. (3) Check the polarity of ballast. ...

Electronic Brake force Distribution (EBD) System Warning Light
These two warning lights illuminate at the same time while driving: • When the ABS and regular brake system may not work normally. In this case, have your vehicle inspected by an authorized HYUNDAI ...

Seatback angle
To recline the seatback: 1. Lean forward slightly and lift up the seatback recline lever. 2. Carefully lean back on the seat and adjust the seatback of the seat to the position you desire. 3. Release ...