Home >> Jaguar >> 2021 >> XF S >> Repair and Diagnosis (Single Page) >> Quick Lookups >> Common Specs & Procedures >> General Information - Diagnostic Trouble Code (DTC) Index (ASCM - BCM) -- XF/(X260) >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: Adaptive Speed Control Module (ASCM) (G2044700) >> DTC U0300-55: Internal Control Module Software Incompatibility - Not configured >> Possible Causes