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

P1927 Open circuit in engine coolant pump

Volkswagen Fuel and Air Metering High severity

P1928 Issue in immobilizer

Volkswagen Computer Output Circuit High severity

U0146 Lost Communication With Gateway A

Communication Network System High severity

U0147 Lost Communication With Gateway B

Communication Network System High severity

U0148 Lost Communication With Gateway C

Communication Network System High severity

U0149 Lost Communication With Gateway D

Communication Network System High severity

U0151 Lost Communication With Restraints Control Module

Communication Network System High severity

U0152 Lost Communication With Side Restraints Control Module

Communication Network System High severity

U0154 Lost Communication With Restraints Occupant Sensing Control Module

Communication Network System High severity

U0156 Lost Communication With Information Center A

Communication Network System High severity

U0157 Lost Communication With Information Center B

Communication Network System High severity

U0158 Lost Communication With Head Up Display

Communication Network System High severity

U0159 Lost Communication With Parking Assist Control Module

Communication Network System High severity

U0161 Lost Communication With Compass Module

Communication Network System High severity

U0162 Lost Communication With Navigation Display Module

Communication Network System High severity