Home › Jaguar › 2012 › XKR-S 2D Convertible › Repair and Diagnosis › Transmission › Transmission Control Systems › Diagnostic Trouble Code Index DTC: Transmission Shift Module (GSM) -- XK/X150 › Diagnostic Trouble Code Index DTC: Transmission Shift Module (GSM) › Description And Operation › Gear Shift Module [GSM] › DTC P0605-45: Internal Control Module Read Only Memory (ROM) Error - › Possible Causes