Chosen Solution
I have a Temperature Sensor failure on the cooling system test. Can anyone help?
Try opening your Macbook bottom and check the fan and the heatsink are not clogged with dust. Since the Macbook has been around for 4/5 years a thermal paste check and replacement might be in order too. That’s how you can possibly correct the temperature, you can’t correct the sensor. You can use the following guide for help: MacBook Pro 13" Retina Display Late 2013 Heat Sink Replacement
