U0121High Priority
Lost Communication With Anti-Lock Brake System (ABS) Control Module
Category: Network• CAN Communication
Reference page • No vehicle-specific data yet
Owner Data Insights
Frequently Appears With U0121
These codes often appear together in owner reports. Check these if you see U0121.
Based on analysis of 2 owner reports where multiple codes appeared together.
Owner Statistics for U0121
Based on 8 real owner discussions • 2 confirmed solutions
25%
Success Rate
8
Data Sources
About This Data
Statistics are aggregated from real owner discussions on Reddit, automotive forums, and YouTube comments. All data is anonymized and represents actual repair experiences reported by vehicle owners.
U0121 Issues by Vehicle
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Reference Information Only
This is a general OBD-II code reference. We're actively collecting real owner experiences and repair data for this code. Check back soon for vehicle-specific troubleshooting guides.