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

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 ...

See also:

Rear Door Module. Components and Components Location
Component Location 1. Rear door module ...

Front Bumper
Components and components location Components 1. Front bumper side bracket [LH] 2. Front bumper side bracket [RH] 3. Front bumper assembly Front Bumper Assembly. Components and components location Component ...

Closing the tailgate
To close the tailgate, lower and push down the tailgate firmly. Make sure that the tailgate is securely latched. WARNING - Exhaust fumes If you drive with the tailgate open, you will draw dangerous exhaust ...