There's been a few users on here that have had sensors replaced. I believe the one you mentioned is part of a recall and the new sensor is better equipped to handle its environment and the reprogram helps too. Once the sensor(s) is/are replaced then there shouldn't be any future problems from them. I personally haven't had any issues yet with mine. I'm at 32,000km.Bought a used '14 cruze TD yesterday. 27,xxx miles. Good shape. Drove it about 100 miles yesterday. Fired it up today and CEL is on. Called dealership to report issue (75 miles to that dealership). Took to local dealership. NOX#2 sensor needs to be replaced. Awesome. Glad it's covered under B2B warranty.
Have now read about a fuel trim software update and MULTIPLE sensor issues. Hope this wasn't a bad move.