Temperature needle went crazy

Hello all,

I am not to much into the internet forums but I am searching for something that happened to my mustang 05 v6.


The temperature needle went crazy, the car is not overheating and looks normal, is just the needle. It went to H, and passed it, almost give full turn.

I am going to change the temperature sensor, but I am not sure if thats it, since unplugging it did not make any change on the needle.

I also got this codes.

P0118
P0193
P0133

I went to the mecahinc but they want to change the whole gauge, that will be expensive :/ and as I am on furlough I can not afford that.

Regards!