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OBD-II code · manufacturer-specific

B2509

Rear Fog Lamp Switch Circuit Failure

System
B — Body electronics
Severity
Minor (2/5)
Can I keep driving?
Usually safe to drive
01

What does B2509 mean?

B2509 is defined as “Rear Fog Lamp Switch Circuit Failure”.

You can usually keep driving, but have it checked soon so a small fault doesn’t become a bigger one.

02

Related codes

03

Look up another code

This page is general information; an exact diagnosis needs measurements and a technician’s check.