I agree, but don't old sensors become somewhat "Lazy" in response time. There is also the heater element that can throw a code when they don't get up to temperature fast enough for the ECM.
98 Riviera SC3800 All stock except gutted air box.
1970 Buick GS455 Stage1, TSP built 470BBB, 602HP/589TQ
Best MPH, 116.06 MPH, Best ET, 11.54