Part of the generic B1C39 overview — this page covers the Jeep meaning specifically.
OBD-II Diagnostic Trouble Code
B1C39
1st Row Driver Retractor Tensioner Circuit High
B
Body
comfort / safety
comfort / safety
1
Mfr
manufacturer code
manufacturer code
C
Body subsystem
39
1st Row Driver Retractor Tensioner Circuit High
Severity · general guide
Varies
Body/safety — depends on system
Code type
Jeep
System
Body
Model
Grand Cherokee
Years
2011