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

U0165 Lost Communication With HVAC Control Module

Communication Network System High severity

U0166 Lost Communication With Auxiliary Heater Control Module

Communication Network System High severity

U0168 Lost Communication With Vehicle Security Control Module

Communication Network System High severity

U0169 Lost Communication With Sunroof Control Module

Communication Network System High severity

U0170 Lost Communication With Restraints System Sensor A

Communication Network System High severity

U0172 Lost Communication With Restraints System Sensor C

Communication Network System High severity

U0173 Lost Communication With Restraints System Sensor D

Communication Network System High severity

U0175 Lost Communication With Restraints System Sensor F

Communication Network System High severity

U0176 Lost Communication With Restraints System Sensor G

Communication Network System High severity

U0178 Lost Communication With Restraints System Sensor I

Communication Network System High severity

U0180 Lost Communication With Automatic Lighting Control Module

Communication Network System High severity

U0181 Lost Communication With Headlamp Levelling Control Module

Communication Network System High severity

U0183 Lost Communication With Lighting Control Module

Communication Network System High severity

U0184 Lost Communication With Radio

Communication Network System High severity

U0185 Lost Communication With Antenna Control Module

Communication Network System High severity