What is your question?
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What is your question?
What do I do to get the catalyst and oxygen sensor to read on the OBDII monitors for my 2002 Hyundai Sonata so I can pass smog test?
1 Reply
Do you have failure codes? Or are you saying the monitors are not set? If it's the monitors not set, you need to make sure you have enough fuel in the vehicle and basically drive the car as normal for a while. They will eventually set. Vary your speeds and accelerations, etc.