Hyundai Repair Questions? Ask a Mechanic for Answers ASAP
I am sorry that you have not been helped yet. I just came online and saw your question.
Ok, the first thing you need to do is install spacers in the O2 sensors between them and the pipe. Use spark plug non-foulers and drill out the ends of them and use 2 per O2 sensor(see attachment).
Clear the codes and if they come back, we will need to check for a vacuum leak.