Home >> Jaguar >> 2014 >> XJR Base >> Repair and Diagnosis >> General Information >> 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