Home › Jaguar › 2014 › XF Base › Repair and Diagnosis › General Information › DTC Index › Diagnostic Trouble Code Index DTC: Integrated Suspension Control Module (ISCM) -- XF/X250 › Diagnostic Trouble Code Index: Integrated Suspension Control Module DTC: Integrated Suspension Control Module (ISCM) › Description And Operation › DTC U300A-62: Ignition Switch - Signal compare failure › Possible Causes