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How to Replace an Oxygen Sensor in the 2002 Hyundai Sonata

You might need to replace the oxygen sensors on your 2002 Hyundai Sonata if you notice your fuel consumption increasing, or if your "check engine" light illuminates. The oxygen sensor measures the amount of oxygen being expelled through the exhaust and adjusts the fuel necessary to meet certain oxygen levels. You have two sensors, one in the manifold and one inline with the catalytic converter. Remove both in the same manner.

Instructions

1

Locate the oxygen sensor in the exhaust manifold or the exhaust pipe next to the catalytic converter. It resembles a spark plug and has one thin wire extending from it. Use the replacement sensor for a visual aid.

2

Push in on the lock on the wire harness at the top of the sensor. Pull the wire off.

3

Remove the sensor with a deep well socket or wrench. Due to the extreme heat generated in the manifold and exhaust pipe, it is common for the sensor to become stuck. If necessary, use spray-on rust breaker such as liquid wrench to aid in the removal process.

4

Place a small amount of anti-seize compound on the threads of the new oxygen sensor and thread the sensor back into the manifold or tail pipe.

5

Push the connector of the wire back onto the oxygen sensor.

Posted by Unknown at 5:15 PM

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