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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U0734 /codes/dtcs/u0734
Communication Network System
U0736 /codes/dtcs/u0736
Communication Network System
U0737 /codes/dtcs/u0737
Communication Network System
U0739 /codes/dtcs/u0739
Communication Network System
U073A /codes/dtcs/u073a
Communication Network System
U073B /codes/dtcs/u073b
Communication Network System
U073C /codes/dtcs/u073c
Communication Network System
U073D /codes/dtcs/u073d
Communication Network System
U073E /codes/dtcs/u073e
Communication Network System
U0740 /codes/dtcs/u0740
Communication Network System
U0741 /codes/dtcs/u0741
Communication Network System
U0742 /codes/dtcs/u0742
Communication Network System
U0743 /codes/dtcs/u0743
Communication Network System
U0744 /codes/dtcs/u0744
Communication Network System
U0745 /codes/dtcs/u0745
Communication Network System

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