Part of the generic B2B04 overview — this page covers the Ford meaning specifically.
OBD-II Diagnostic Trouble Code
B2B04
Ambient Light Zone 1 Blue Circuit Open
B
Body
comfort / safety
comfort / safety
2
Generic
SAE standard
SAE standard
B
Body subsystem
04
Ambient Light Zone 1 Blue Circuit Open
Severity · general guide
Varies
Body/safety — depends on system
Code type
Ford
System
Body
Model
F-150
Years
2011