Home › Land Rover › 2017 › Range Rover Sport HSE Dynamic › Repair and Diagnosis › Quick Lookups › DTC Index › 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 U3006-85: Control Module Input Power "A" - Signal above allowable range › Possible Causes