garajizOBD-II code · generic
U0121
Lost Communication With Anti-Lock Brake System (ABS) Control Module
- System
- U — In-vehicle network
- Severity
- Critical (5/5)
- Can I keep driving?
- Drive with caution
What does U0121 mean?
U0121 is defined as “Lost Communication With Anti-Lock Brake System (ABS) Control Module”.
Drive gently and only as far as you need to; have it checked as soon as possible.
Related codes
- U0122Lost Communication With Vehicle Dynamics Control Module
- U011FLost Communication With V2X Module
- U0123Lost Communication With Yaw Rate Sensor Module
- U011ELost Communication With Throttle Actuator B Control Module
- U0124Lost Communication With Lateral Acceleration Sensor Module
- U011DLost Communication With All Wheel Drive Control Module
Look up another code
This page is general information; an exact diagnosis needs measurements and a technician’s check.