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.
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If your girl is throwing gang signs with her toes you're hitting the spot.
"If we cannot afford to take care of Veterans, then we should stop making them."
David C. Wilker Jr. USAF (RET)