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

U1308 SCP (J1850) Invalid or Missing Data for Function Read Engine Torque

Communication Network System High severity

U1341 SCP (J1850) Invalid or Missing Data for Function Read Vehicle Speed

Communication Network System High severity

U1451 SCP (J1850) Invalid or Missing Data for Function Read Audible Warnings / Anti-Theft Module, Vehicle Immobilized

Communication Network System High severity

U1798 SCP (J1850) Lack of Acknowledgment for External Access (Doors)

Communication Network System High severity

U2004 Audio Steering Wheel Control Unit is Not Responding

Communication Network System High severity

U2007 Audio Navigation Unit is Not Responding

Communication Network System High severity

U2011 Module Transmitted Invalid Data (Non SCP)

Communication Network System High severity

U2015 Signal Link Fault (Non SCP)

Communication Network System High severity

U2017 Driver Side Crash Sensor Communication Fault (Non SCP)

Communication Network System High severity

U2150 SCP (J1850) Invalid Data from REM

Communication Network System High severity

U2500 (CAN) Lack of Acknowledgement From Engine Management

Communication Network System High severity

P094F /codes/dtcs/p094f

Generic

U0001 High Speed CAN Communication Bus

Communication Network System High severity

U0004 High Speed CAN Communication Bus (+) Low

Communication Network System High severity

U0008 High Speed CAN Communication Bus (-) High

Communication Network System High severity