The HVAC controller reports a fault in the rear blower motor circuit, used in vehicles with rear climate zone.
Low severity. Can I keep driving?You can normally keep driving. If it affects the lights or visibility, get it repaired before driving at night or in the rain.
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Most likely causes
- Rear blower resistor failed
- Rear blower motor worn
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: medium
What each character of B0330 means
- B: Body
- 0: Generic code: same on every make
- 3: Subsystem depends on the code range
- 30: Specific fault in that system
Frequently asked questions
Can I keep driving with code B0330?
You can normally keep driving. If it affects the lights or visibility, get it repaired before driving at night or in the rain.
What causes code B0330?
The most common causes are: rear blower resistor failed; rear blower motor worn.
Sources
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.