Home >> Land Rover >> 2020 >> Range Rover Autobiography >> Repair and Diagnosis >> General Information >> Specifications Index >> Diagnostic Trouble Code Index DTC: Transfer Case Control Module (TCCM) -- Range Rover/L405 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: Transfer Case Control Module (TCCM) (G2016291) >> DTC U3006-85: Control Module Input Power "A" - Signal above allowable range >> Possible Causes