Home >> Land Rover >> 2017 >> Discovery SE >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Diagnostic Trouble Code Index DTC: Transfer Case Control Module (TCCM) -- Discovery/L462 >> Diagnostic Trouble Code Index DTC: Transfer Case Control Module (TCCM) >> Description And Operation >> DTC U3006-85: Control Module Input Power "A" - Signal above allowable range >> Possible Causes