Home › Land Rover › 2017 › Range Rover Autobiography › Repair and Diagnosis › Transmission › Transfer Case › Diagnostic Trouble Code Index DTC: Transfer Case Control Module (TCCM) -- Range Rover/L405 › Diagnostic Trouble Code Index DTC: Transfer Case Control Module (TCCM) › Description And Operation › DTC U2300-54: Central Configuration - Missing calibration › Possible Causes