B0283
HVAC Blower Motor Circuit
The HVAC controller reports a fault in the blower motor control circuit. Blower may run at incorrect speed or not at all.
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: easy
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.
- Blower resistor or final stage failedCommon
- Worn blower motor brushesPossible
- Short in blower wiringLess likely
Parts involved
- Hvac Blower Motor
- Blower Resistor
- Hvac Control Module
B0283 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.