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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Fault codes
U0005
Internal malfunction detected in ECM (CAN bus)
Mercedes Benz
Communication Network System
High severity
U0006
Internal malfunction detected in ECM (CAN bus)
Mercedes Benz
Communication Network System
High severity
U0008
Internal malfunction detected in ECM (CAN bus)
Mercedes Benz
Communication Network System
High severity
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