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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Fault codes

U1430 SCP (J1850) Invalid or Missing Data for Function Read Fuel System

Communication Network System High severity

U1612 SCP (J1850) Lack of Acknowledgment for Primary Id

Communication Network System High severity

U1736 SCP (J1850) Lack of Acknowledgment for Telematics

Communication Network System High severity

U1750 SCP (J1850) Lack of Acknowledgment for Audible Warnings

Communication Network System High severity

U1794 SCP (J1850) Lack of Acknowledgment for Mirrors

Communication Network System High severity

U1797 SCP (J1850) Lack of Acknowledgment for Door Locks

Communication Network System High severity

U1806 SCP (J1850) Lack of Acknowledgment for Primary Id

Communication Network System High severity

U1900 CAN Communication Bus Fault

Communication Network System High severity

U1950 UPB Communication Bus Fault

Communication Network System High severity

U2000 Audio Rear Control Unit is Not Responding

Communication Network System High severity

U2001 Audio Tape Deck Unit is Not Responding

Communication Network System High severity

U2005 Audio Rear Integrated Control Panel Unit is Not Responding

Communication Network System High severity

U2006 Audio Remote Climate Control Unit is Not Responding

Communication Network System High severity

U2008 Audio Phone is Not Responding

Communication Network System High severity

U2009 Audio Front Control Module (ACM) is Not Responding

Communication Network System High severity