27723-4BU0A is a temperature sensing thermistor (AC evaporator/air-conditioning sensor) used in the HVAC / climate control system of the Nissan X-Trail T32. It’s a genuine Nissan part designed to monitor air temperature inside the evaporator or HVAC unit, allowing the car’s climate control to regulate cooling accurately.
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OEM Part Number: 27723-4BU0A (also written as 277234BU0A).
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Common Names: AC temperature sensor, thermistor probe, evaporator temperature sensor.
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Socket: 2-pin connector.
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Where it is: Mounted in or near the AC evaporator / cooling coil area inside the HVAC box.
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Fitment: Fits many Nissan X-Trail T32 variants (including 2WD and 4WD with MR20DD engine), roughly 2014–2020 model years
