I have a 2018 F350 with a 6.7 Diesel and I noticed today that the outside ambient temperature is marking -4 with a fluctuation of about 5 degrees every second when it's really about -20 also my oil temperature says it's 199 degrees Fahrenheit and my coolant temp is 180 degrees Fahrenheit. I could see the ambient temperature sensor going bad what would make the transmission and coolant temperature sensors go also

 

 

omg do I feel like an absolute idiot. You see one of my drivers changed it from Celsius to Fahrenheit and I never clued in that perhaps that's what it was. *forehead slap*