Check Engine Light 2002 Hyundai Elantra

I have a 2002 Elantra with 50,000 miles. I have had the check engine light go on three times recently. First, my mechanic said it was a hose Clamp and I needed oxygen sensors so he replaced both. The second time, he said I needed a new catalytic converter. Finally, he said it was something called the intake manifold gasket and he replaced that. Just this morning it came on again! Aside from getting a second opinion
any suggestions for me out there? I'm already in for a lot of money here.

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What codes are coming up here?