So this all started one day after having my block heater plugged in.

The next day the temperature read 156°, and never really varied from there for a couple of weeks.

I reset the negative terminals off, and it went to -40.

I’ve gone through two ambient air temp sensors, still reading -40.

I installed new mirrors with ambient air temp sensors, and it still reads -40.

Can somebody kindergarten me through how to troubleshoot this?

TIA


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