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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U1D4B /codes/dtcs/u1d4b
Communication Network System
U1D4C /codes/dtcs/u1d4c
Communication Network System
U1D4D /codes/dtcs/u1d4d
Communication Network System
U1D4E /codes/dtcs/u1d4e
Communication Network System
U1D4F /codes/dtcs/u1d4f
Communication Network System
U1D50 /codes/dtcs/u1d50
Communication Network System
U1D51 /codes/dtcs/u1d51
Communication Network System
U1D52 /codes/dtcs/u1d52
Communication Network System
U1D54 /codes/dtcs/u1d54
Communication Network System
U1D55 /codes/dtcs/u1d55
Communication Network System
U1D56 /codes/dtcs/u1d56
Communication Network System
U1D57 /codes/dtcs/u1d57
Communication Network System
U1D58 /codes/dtcs/u1d58
Communication Network System
U1D59 /codes/dtcs/u1d59
Communication Network System
U1D5A /codes/dtcs/u1d5a
Communication Network System

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