We had this i20 reported with significant complain related to HVAC system of the vehicle, the car owner stated about the the digital panel indicating outside temperature as -25°C even during hot summer and whenever the faulty reading appears AC cooling cut off making it inconvenient to drive the vehicle without proper cabin cooling
Diagnosing the vehicle in details sensor was found to be in good condition whereas the wiring were observed to be cut and hence the trouble in AC cooling
Function of ambient sensor
The sensor provide input to automatic HVAC system to help control the interior temperature of the automobile . The sensor also provides the vehicle occupants with temperature readings from outside the car. This information is particularly useful when driving under near freezing or freezing conditions.
Symptoms of faulty ambient sensor
-faulty AC auto mode
-inconsistency in cooling
-incorrect outdoor temperature
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