How do you reset the computer in a 2001 hyundai sonata

My power steering hose sprung a leak and that made the check engine light come on I assume it senced no pressure. Instead of buying a 380 dollar hose i repaired it myself but now the check engine light won't come off. I want to reset it but don't know how and I want to sell the car.

If anyone can help it would be great. :)

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