OBD-II Diagnostic Trouble Code
B21A1
ECU Reset/recovery Occurred
B
Body
comfort / safety
comfort / safety
2
Generic
SAE standard
SAE standard
1
Body subsystem
A1
ECU Reset/recovery Occurred
Severity · general guide
Varies
Body/safety — depends on system
Code type
Jeep
System
Body
Model
Grand Cherokee
Years
2011