B0184
Rear Blower Motor Circuit
The HVAC control module has detected a fault in the rear blower motor circuit, used in vehicles with separate rear climate zones. Symptoms include no rear airflow or rear blower stuck on.
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: medium
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Common causes
Ordered by how often each turns out to be the cause.
- Rear blower motor failedCommon
- Rear blower resistor failedPossible
Parts involved
- Rear Blower Motor
- Rear Blower Resistor
- Hvac Control Module
B0184 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.