Kia Optima: Heated Oxygen Sensor (HO2S) Repair procedures - Engine Control System - Engine Control/Fuel SystemKia Optima: 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]

[Bank 1 / Sensor 2]


[Bank 1 / Sensor 2]

Installation

Installation


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 ...

See also:

Specifications
Specification ItemSpecificationUltrasonic sensorVoltage ratingDC 12 VDetecting range40 cm ~ 120 cmOperation voltageDC 9 ~ 12 VOperation currentMAX 300 mAOperation temperature-30°C ~ +80°C (-22 ...

Audio Remote Control Schematic Diagrams
Circuit Diagram ...

Service Standard
Item Specification Ignition Timing () BTDC 6 10 Idle Speed (rpm) A/C OFF Neutral, N, P-range 70 ...

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