Hyundai Tucson: Engine Control System / Heated Oxygen Sensor (HO2S) Description and Operation

Hyundai Tucson (LM) 2010-2015 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 And Exhaust System”) ...

Heated Oxygen Sensor (HO2S) Specifications

Specification HO2S [Bank 1/Sensor 1] (Linear type) ItemSpecificationHeater Resistance (x)2.4 ~ 4.0 [20°C(68°F)] HO2S [Bank 1/Sensor 2] (Binary type) A/F Ratio (x)Output Voltage(V)RICH0.6 ~ ...

Other information:

Hyundai Tucson (LM) 2010-2015 Owners Manual: Reporting safety defects
If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) in addition to notifying HYUNDAI MOTOR AMERICA. If NHTSA receives similar complaints, it may open an ...

Hyundai Tucson (LM) 2010-2015 Service Manual: Oil Pressure Switch Repair procedures
Inspection 1. Check the continuity between the terminal and the body with an ohmmeter. If there is no continuity, replace the oil pressure switch. 2. Check the continuity between the terminal and the body when the fine wire is pushed. If there is continuity even when the fine wire is pu ...