| SONATA(YF) >2013 > G 2.4 GDI > Engine Control/Fuel System > 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 4 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

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.: 09392-2H100) is useful when removing the heated oxygen sensor.

[Bank 1 / Sensor 1]
(SULEV)

(ULEV)

[Bank 1 / Sensor 2]
(SULEV)

(ULEV)

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. | Installation is reverse of removal.

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