B0330
HVAC Rear Blower Motor Circuit
The HVAC controller reports a fault in the rear blower motor circuit, used in vehicles with rear climate zone.
- 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 resistor failedCommon
- Rear blower motor wornPossible
Parts involved
- Rear Blower Motor
- Rear Blower Resistor
- Hvac Control Module
B0330 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.