Hi,

compiled and burned.

Why do you set "car_ambient_temp" twice?

--------------snip---------------

case 0x801f: // Outside temperature (filtered)

car_ambient_temp = ((int)value >> 1) - 0x28;

break;

case 0x0046: // Ambient temperature

car_ambient_temp = (signed char)((int)value - 0x28);

break;

--------------snap---------------

I comment 0046 out.

AND: there is NO /2 in the calc necessary. Only -40 needed.

Log attached.