OBD-II code · manufacturer-specific
B2104
Door Passenger Key Cylinder Switch Failure
- System
- B — Body electronics
- Severity
- Low (1/5)
- Can I keep driving?
- Usually safe to drive
What does B2104 mean?
B2104 is defined as “Door Passenger Key Cylinder Switch Failure”.
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.