Part of the generic B0020 overview — this page covers the Ford meaning specifically.
OBD-II Diagnostic Trouble Code
B0020
Driver Frontal Deployment Loop (Stage 2) Open
B
Body
comfort / safety
comfort / safety
0
Generic
SAE standard
SAE standard
0
Body subsystem
20
Driver Frontal Deployment Loop (Stage 2) Open
Severity · general guide
Varies
Body/safety — depends on system
Code type
Ford
System
Body
Model
F-150
Years
2011