By the AutoDTCs Editorial Team·Researched against SAEJ2012 & factory service data — how we research this
OBD-II Diagnostic Trouble Code
C2121
Data from transmitter ID 1 not received (main)
C
Chassis
brakes / steering
brakes / steering
2
Generic
SAE standard
SAE standard
1
Chassis subsystem
21
Data from transmitter ID 1 not received (main)
Severity · general guide
High
Brakes/steering — inspect soon
Code type
Generic
System
Chassis