Universal O2 sensors might be okay for a quick fix, but they can drift out of spec slowly without throwing codes right away. That slow drift could cause wear on the cat converter over months, which is a sneaky problem. @baker.willow's point about checking long term trims is spot on, but even then, it might not catch the early drift. I've seen cases where the sensor reads just enough to keep the check engine light off but still hurts fuel economy. It's like a silent killer for the engine, lol.