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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U241A /codes/dtcs/u241a
Communication Network System
U241B /codes/dtcs/u241b
Communication Network System
U241E /codes/dtcs/u241e
Communication Network System
U241F /codes/dtcs/u241f
Communication Network System
U2420 /codes/dtcs/u2420
Communication Network System
U2421 /codes/dtcs/u2421
Communication Network System
U2422 /codes/dtcs/u2422
Communication Network System
U2423 /codes/dtcs/u2423
Communication Network System
U2427 /codes/dtcs/u2427
Communication Network System
U2429 /codes/dtcs/u2429
Communication Network System
U242A /codes/dtcs/u242a
Communication Network System
U242B /codes/dtcs/u242b
Communication Network System
U242C /codes/dtcs/u242c
Communication Network System
U242D /codes/dtcs/u242d
Communication Network System
U242E /codes/dtcs/u242e
Communication Network System

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