OBD fault code library
Look up any P or U code to see what it means, what causes it, the parts involved and how it gets fixed.
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OBD DashX shows which problems come with each code, how often they show up in other vehicles, and how to fix them — step by step.
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Fault codes
U0125
Lost Communication With Multi-axis Acceleration Sensor Module
Communication Network System
High severity
U0126
Lost Communication With Steering Angle Sensor Module
Communication Network System
High severity
U0129
Lost Communication With Brake System Control Module
Communication Network System
High severity
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