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Home >> Kia >> 2003 >> Optima L4-2.4L >> Repair and Diagnosis >> Fundamentals and Basics >> Replacement Oxygen Sensor
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Replacement Oxygen Sensor

The oxygen sensor is a device which controls the fuel mixture. If the oxygen sensor is damaged, the exhaust-gas cleaning effect as well as driveability deteriorates. Therefore, its performance should be checked periodically using the O2 sensor monitoring function of the scan tool and replaced as necessary.