Bogus fan readings persist indefinitely in psensor max/min column

[Edward Welbon]

I like this tool but have a problem: a fan occasionally barfs out an impossible fan RPM (e.g. 675000RPM).  The fan in question seems to function properly (maybe caused by the bios IDK). The problem is that this distorts the graph tremendously (fans graph no longer meaningful).  Is there some way I can a bound the max/min measurements of a measurement or discard out of bound measurements?  This is on Ubuntu 22.04.

[Greg Goodsir]

I have had bogus fan readings with two different fans at different times. With the first I came to the conclusion it was a fan faulty rpm sensor. I contacted the seller and they replaced it. The new fan gave proper fan rpm readings. The second fan I have not bothered to replace because it is part of a cpu cooler, that I would need to get a whole new cooler heat sink as well. I have just disabled the speed sensing in the BIOS. It runs at full speed all the time but it is still very quiet. So it is not necessarily psensor at fault.