ender 3 v2 nozzle is too lowperature

Hey i got a problem with my ender-3 v2 i think my temp sensor has broken (again) but strange thing is he knows the temp

Get a couple of spare thermistors, they are quite cheap.

So its broken and where can i vind them

here on Aliexpress but I am sure you can find them on Amazon. When tightening the retention screw only lightly nip up the wires, they are easily crushed.