Home › Land Rover › 2015 › Range Rover Base › Repair and Diagnosis › General Information › DTC Index › 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 U2016-04: Control Module Main Software - System internal failures › Possible Causes