The famously ironic case of honesty in a study about honesty

https://retractionwatch.com/2021/09/14/highly-criticized-pap...

That's Dan Ariely. I don't think there's any known example of Kahnemann fabricating data.

As fair as I know none of the research by Kahemann himself is suspect, but a lot of the studies he cited in Thinking Fast and Slow, especially the ones about priming, have failed to replicate. YMMV on what this implies for the book as a whole.

He's open about the priming chapter concern:

https://retractionwatch.com/2017/02/20/placed-much-faith-und...