2001 Honda Civic 2001 Civic died, then ran after sitting aw

Hello, and thank you for answering my question. I have a 2001 Civic with 176000 miles. The other day I was driving in heavy traffic when the check engine light came on. Then the engine gradually lost power until it finally died at the side of the freeway. I checked the gauges and everything else seemed OK. After letting the car sit for about an hour, the traffic let up so I started the car. It ran well, but the check engine light was still on. I was able to drive another 20 miles home without any other issues.