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

See also:

Multi fuse
If the multi fuse is blown, it must be removed as follows: 1. Disconnect the negative battery cable. 2. Remove the bolts shown in the picture above. 3. Replace the fuse with a new one of the same rating. ...

Specifications
Specifications Front Suspension Item Specification Suspension type Macpherson Strut Shock absorber Type Gas Stabilizer Bar Coil spring Free Height [I.D. color] 2WD 330.0 mm(12.9921 in.), [White /  ...

MTS Antenna. Repair procedures
Removal 1. Remove the roof antenna. Installation 1. Install the roof antenna. ...