garajizOBD-II code · manufacturer-specific
B1866
Battery Power Supply ECU Circuit Short To Battery
- System
- B — Body electronics
- Severity
- Minor (2/5)
- Can I keep driving?
- Usually safe to drive
What does B1866 mean?
B1866 is defined as “Battery Power Supply ECU Circuit Short To Battery”.
You can usually keep driving, but have it checked soon so a small fault doesn’t become a bigger one.
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This page is general information; an exact diagnosis needs measurements and a technician’s check.