DTC P0072: Ambient Air Temperature Sensor Circuit Low Input; DTC P0073: Ambient Air Temperature Sensor Circuit High Input [05/2014 - ]: Description
The ambient air temperature sensor that is installed in the front part of the condenser detects ambient air temperature. The resistance of the ambient air temperature sensor varies depending on the change in ambient air temperature. As the ambient air temperature decreases, the resistance increases and, conversely, as the ambient air temperature increases, the resistance decreases. The ECM detects the variation of voltage due to the change in resistance of the ambient air temperature sensor using the signal from the combination meter assembly via the CAN communication.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0072 | Ambient air temperature sensor voltage is less than 0.89 V for 2.5 seconds or more. (1 trip detection logic) |
|
| P0073 | Ambient air temperature sensor voltage is more than 3.29 V for 2.5 seconds or more. (1 trip detection logic) |