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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U1778 /codes/dtcs/u1778
Communication Network System
U1779 /codes/dtcs/u1779
Communication Network System
U177A /codes/dtcs/u177a
Communication Network System
U177B /codes/dtcs/u177b
Communication Network System
U177D /codes/dtcs/u177d
Communication Network System
U177E /codes/dtcs/u177e
Communication Network System
U177F /codes/dtcs/u177f
Communication Network System
U1780 /codes/dtcs/u1780
Communication Network System
U1781 /codes/dtcs/u1781
Communication Network System
U1782 /codes/dtcs/u1782
Communication Network System
U1783 /codes/dtcs/u1783
Communication Network System
U1785 /codes/dtcs/u1785
Communication Network System
U1787 /codes/dtcs/u1787
Communication Network System
U1788 /codes/dtcs/u1788
Communication Network System
U1789 /codes/dtcs/u1789
Communication Network System

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