Home >> Land Rover >> 2017 >> Range Rover Sport HSE Dynamic >> Repair and Diagnosis >> Transmission >> Transfer Case >> Diagnostic Trouble Code Index DTC: Transfer Case Control Module (TCCM) -- Range Rover Sport/L494 >> Diagnostic Trouble Code Index DTC: Transfer Case Control Module (TCCM) >> Description And Operation >> DTC U3012-48: Control Module Improper Wake-up Performance - Supervision software failure >> Possible Causes