The symptoms of a bad Ambient (Outside) Air Temperature Sensor and how to test it has failed.
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What is an Ambient Air Temperature Sensor?
The ambient air temperature sensor monitors the air temperature outside of the vehicle.
Sometimes called an outside temp sensor, it is usually found inside the bumper or grill.
Many climate control systems will flash an indicator or display a message if the ambient sensor is bad.

Symptoms of a Bad Ambient Air Temperature Sensor
Engine Light on or Climate Control Systems Indicator
Outside Dashboard Temperature is Wrong
Air Conditioner or Heater Does Not Work
The HVAC Automatic Mode Won’t Work

How To Test Ambient Air Temperature Sensor
Scan for Codes (P0070 P0071 P0072 P0073 P0074)
Test Sensor with Meter

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