Kia Optima Hybrid: 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].
Measure resistance between the HO2S terminals 3 and 4 [B1/S2].
4.
Check that the resistance is within the specification.
HO2S [Bank 1/Sensor 1] (Linear type)
Item
Specification
Heater Resistance (?)
2.5 ~ 4.0 [20°C(68°F)]

HO2S [Bank 1/Sensor 2] (Binary type)
A/F Ratio (?)
Output Voltage(V)
RICH
Approx. 0.92
LEAN
Approx. 0.04

Item
Specification
Heater Resistance (?)
3.3 ~ 4.1?[21°C(69.8°F)]

Removal
1.
Turn the ignition switch OFF and disconnect the battery negative (-) terminal.
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]

[Bank 1 / Sensor 2]

Installation
   
Install the component with the specified torques.
Note that internal damage may occur when the component is dropped. In this case, use it after inspecting.
   
Do not 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 ...

Accelerator Position Sensor (APS) Description and Operation

Description Accelerator Position Sensor (APS) is installed on the accelerator pedal module and detects the rotation angle of the accelerator pedal. The APS is one of the most important sensors in engine ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Specifications


Specifications ItemsSpecificationsRated voltageDC 12VOperating temperature range-30°C ~ +80°C (-22 ~ +176°F)Rated loadDimmer & passing switchHigh : 0.2A (Relay load)Low : 0.2A (Relay load)Passing : 0.2A (Relay load)Lighting switchLighting : 0.2A (Relay load)Turn signal & lane change switch6.6 ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Repair procedures


Inspection Check it by the procedure below to see if the function of the ECM is normal. 1. Turn the ignition key to the "ON" position. 2. Cover the front sensor to stop functioning. 3. Shine a light at the rear sensor. 4. The ECM should be darkened as soon as the rear sensor detects the light.   ...

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