OBD-II code · manufacturer-specific
B1806
Lamp Tail Output Circuit Failure
- System
- B — Body electronics
- Severity
- High (4/5)
- Can I keep driving?
- Drive with caution
What does B1806 mean?
B1806 is defined as “Lamp Tail Output Circuit Failure”.
Drive gently and only as far as you need to; have it checked as soon as possible.
Manufacturer-specific meanings
The same code can mean something different on some makes.
- Toyota: Passenger Airbag Squib Circuit Open
Related codes
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This page is general information; an exact diagnosis needs measurements and a technician’s check.