B0284
Electric Rear Defrost Circuit Range/Performance
B0284 is an OBD-II diagnostic trouble code meaning: Electric Rear Defrost Circuit Range/Performance. Common causes: broken or damaged heating element, rear heating relay malfunction. Estimated repair cost: $11–56.
Symptoms
- Rear defogger does not work
- Rear window defogger is unstable
- The heated glass indicator does not light up
Causes
- Broken or damaged heating element
- Rear heating relay malfunction
- Problems with wiring or connectors
- Contact corrosion
- Control unit malfunction
How to Fix
- Check the integrity of the heating element
- Check heating circuit relays and fuses
- Inspect wiring and connectors for damage and corrosion
- Check the operation of the control unit
- Replace faulty components
Related codes
Error B0284 by Vehicle Brand
FAQ
What does the B0284 code mean?
B0284 is an OBD-II diagnostic trouble code that indicates: Electric Rear Defrost Circuit Range/Performance
What causes a B0284 error code?
The most common causes of B0284 include: Broken or damaged heating element; Rear heating relay malfunction; Problems with wiring or connectors; Contact corrosion.
How do I fix a B0284 diagnostic trouble code?
To fix B0284: Check the integrity of the heating element. Check heating circuit relays and fuses. Inspect wiring and connectors for damage and corrosion. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B0284?
Limited driving only, diagnose soon
How much does it cost to fix B0284?
The estimated repair cost for B0284 is $11–56. Actual cost depends on your vehicle, location, and labor rates.
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