2005 Corvette where does the ECU get it's ambient air temp value from?

[streetking408ys]

I'm curious what I'm not understanding about this car, as the HVAC control reads correct at let's say 70F (on a 70F day) but when I look at the HPT logs I take, the ambient air temp (SAE) is reading 43F. I assumed they both used the same sensor down the the passenger side of the lower radiator support near the horns. Thanks.

[blindsquirrel]

It's a calculated value and often wrong, like oil temp on the ones that don't have a physical oil temp sensor.

[streetking408ys]

Thank you for the information.