Hyundai Accent: Heated Oxygen Sensor (HO2S). Description and Operation

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.

Installation

• Install the component with the specified torques. • ...

Heated Oxygen Sensor (HO2S). Specifications

Specification HO2S [Bank 1/Sensor 1] Item Specification Heater Resistance (Ω) 2.4 ~ 4.0 [20°C(68°F)] HO2S [Bank 1/Sensor 2 ...

See also:

Disassembly
1. Remove the rear cover (A). 2. Loosen the mounting bolts(A) and disconnect the brush holder assembly(B). ...

Power Out Side Mirror Switch. Repair procedures
Inspection 1. Disconnect the negative (-) battery terminal. 2. Remove the front door trim panel. (Refer to the BD group - "Front d ...

Removal
1. Remove the following items; A. Engine cover (A). (Refer to "Intake and Exhaust system" in EM group) ...