You may have a bad conection. You could also have a cat converter that is failing and has broken up some. every time you hit a bump a piece clogs your exhaust and that sets offf the DTC and lights up your CEL.
A clogged cat at night will even glow in the dark after a long run on the highway.
Do you know what was good about the good old days? I wasn't good, And I wasn't old!
Senators and Congressman should wear uniforms like NASCAR drivers so we could identify their corporate sponsors....