i think one of my sensors on my e2160 is broken

it reads -128 degrees C in speedfan XD
the reason i post is im just double checking, its nothing to be worried about, it all works fine otherwise even other sensors

Well it's pretty safe to say it's not accurate given that I don't think you would hit that temperature even at the South Pole. It is either a faulty sensor on the motherboard or possibly you need to update the bios. You might check the temp in your bios and see what it says. If it says the same thing then I would try to update the bios and see if that cures it. If it has the correct temp then it's probably a software issue.

Try Coretemp and trust it. Speedfan and others use the temps supplied my the mobo makers. They are innacurate. CT reads the code from the inside of the chip directly.