Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC P0071: Ambient Air Temperature Sensor Range / Performance [07/2018 - ]: 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 |
|---|---|---|
| P0071 | Either of the following conditions is met (2 trip detection logic):
|
Ambient air temperature sensor |
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.