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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U0B21 /codes/dtcs/u0b21
Communication Network System
U0B22 /codes/dtcs/u0b22
Communication Network System
U0B23 /codes/dtcs/u0b23
Communication Network System
U0B24 /codes/dtcs/u0b24
Communication Network System
U0B25 /codes/dtcs/u0b25
Communication Network System
U0B26 /codes/dtcs/u0b26
Communication Network System
U0B27 /codes/dtcs/u0b27
Communication Network System
U0B29 /codes/dtcs/u0b29
Communication Network System
U0B2A /codes/dtcs/u0b2a
Communication Network System
U0B2B /codes/dtcs/u0b2b
Communication Network System
U0B2C /codes/dtcs/u0b2c
Communication Network System
U0B2D /codes/dtcs/u0b2d
Communication Network System
U0B2E /codes/dtcs/u0b2e
Communication Network System
U0B2F /codes/dtcs/u0b2f
Communication Network System
U0B31 /codes/dtcs/u0b31
Communication Network System

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