garajizOBD-II code · manufacturer-specific
B1803
Lamp Turn Signal Rear Output Circuit Open
- System
- B — Body electronics
- Severity
- Minor (2/5)
- Can I keep driving?
- Usually safe to drive
What does B1803 mean?
B1803 is defined as “Lamp Turn Signal Rear Output Circuit Open”.
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 Squib Circuit Short to Battery
Related codes
- B1802Lamp Turn Signal Rear Output Circuit Failure
- B1804Lamp Turn Signal Rear Output Circuit Short To Battery
- B1801Lamp Turn Signal Front Output Circuit Short To Ground
- B1805Lamp Turn Signal Rear Output Circuit Short To Ground
- B1800Lamp Turn Signal Front Output Circuit Short To Battery
- B1806Lamp Tail Output Circuit Failure
Look up another code
This page is general information; an exact diagnosis needs measurements and a technician’s check.