Home › Jaguar › 2012 › XJ Base › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code (DTC) Index DTC: Vehicle Dynamics Control Module (VDCM) -- XJ/X351 › Diagnostic Trouble Code (DTC) Index DTC: Vehicle Dynamics Control Module (VDCM) › Description And Operation › Vehicle Dynamics Control Module (VDCM) › U2023-51 Control Module Network Signal Calibration Data - Not programmed › Possible Causes