Hyundai Sonata: Engine Control System / Heated Oxygen Sensor (HO2S) Repair procedures

Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the HO2S connector.
3.
Measure resistance between the HO2S terminals 2 and 5 [B1/S1].
4.
Measure resistance between the HO2S terminals 3 and 4 [B1/S2].
5.
Check that the resistance is within the specification.

Specification: Refer to “Specification”

Removal
[Bank 1 / Sensor 1]
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.
Disconnect the connector (A), and then remove the sensor (B).
   
Note that the SST (Part No.: 09392-1Y100) is useful when removing the heated oxygen sensor.

[Bank 1 / Sensor 2]
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.
Disconnect the connector (A), and then remove the sensor (B).

Installation
   
Install the component with the specified torques.
Note that internal damage may occur when the component is dropped. If the component has been dropped, inspect before installing.
   
DON’T use a cleaner, spray, or grease to sensing element and connector of the sensor because oil component in them may malfunction the sensor performance.
Sensor and its wiring may be damaged in case of contacting with the exhaust system (Exhaust Manifold, Catalytic Converter, and so on).
1.
Install in the reverse order of removal.

Heated oxygen sensor installation:
39.2 ~ 49.1 N.m (4.0 ~ 5.0 kgf.m, 28.9 ~ 36.2 lb-ft)

Heated Oxygen Sensor (HO2S) Schematic Diagrams
Circuit Diagram ...

Rail Pressure Sensor (RPS) Description and Operation
Description Rail Pressure Sensor (RPS) is installed on the delivery pipe and measures the instantaneous fuel pressure in the delivery pipe. The sensing element (Semiconductor element) built in ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Side Airbag (SAB) Module Repair procedures
Removal     The side airbag cannot be disassembled from the seat back assembly, so replace the seat back assembly when replacing the side airbag. 1. Disconnect the battery negative cable and wait for at least 3 minutes before beginning work. 2. Remove the front seat ...

Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Component Location 1. Fuel filler door ...

© 2018-2025 www.hsonatalf.org