Home › Jaguar › 2016 › XJ Supercharged › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Restraints Control Module (RCM) -- XJ/X351 › Diagnostic Trouble Code (DTC) Index DTC: Restraints Control Module (RCM) › Description And Operation › Restraints Control Module (RCM) › DTC U3000-49: Control Module - Internal electronic failure › Possible Causes