BMW 328i loud A/C fan issue with no air flow possibly due to broken sensor on BMW 328i

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some BMW 328i owners report experiencing issues with a loud A/C fan accompanied by no airflow, which may indicate a faulty fan motor or problems with the fan assembly. Additionally, low air volume despite cold A/C could be linked to a malfunctioning blower motor or its components. A broken sensor, such as the AC EVAP temperature sensor, has also been noted as a potential cause of A/C system problems. Owners are advised to check for faulty compressors, sensors, or wiring issues that could contribute to these symptoms. In some cases, a dirty cabin air filter may restrict airflow and diminish cooling efficiency. To address these concerns, it is recommended to inspect the fan motor and assembly, assess the blower motor and its components, ensure all A/C system sensors are functioning properly, and regularly replace the cabin air filter to maintain optimal airflow and cooling performance.

2 people reported this problem
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BMW 328i vehicles with this problem

1 model year affected
Average mileage: 52,000 miles
(52,000 - 52,000)

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