Kia Optima: Inspection - Heated Oxygen Sensor (HO2S). Repair procedures - Engine Control System - Engine Control/Fuel System - Kia Optima TF 2011-2025 Service ManualKia Optima: 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”


Heated Oxygen Sensor (HO2S). Repair procedures
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Removal
1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Disconnect the connector (A), and then remove the sensor (B). ...

See also:

Inspection
1. Turn ignition switch OFF. 2. Disconnect the oil temperature sensor connector. 3. Measure resistance between sensor signal terminal and sensor g ...

Cleaning
1. Make sure the ignition switch and all accessories are in the OFF position. 2. Disconnect the battery cables (negative first). 3. ...

Reassembly
Thoroughly clean all parts to be assembled.Before installing the parts, apply fresh engine oil to all sliding and rotating surfaces. ...

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