garajizOBD-II code · manufacturer-specific
B1812
Lamp Backup Switch Input Circuit Short To Battery
- System
- B — Body electronics
- Severity
- Minor (2/5)
- Can I keep driving?
- Usually safe to drive
What does B1812 mean?
B1812 is defined as “Lamp Backup Switch Input Circuit Short To Battery”.
You can usually keep driving, but have it checked soon so a small fault doesn’t become a bigger one.
Manufacturer-specific meanings
The same code can mean something different on some makes.
- Toyota: Driver Airbag 2nd Stage Squib Circuit Short to Ground
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This page is general information; an exact diagnosis needs measurements and a technician’s check.