Home >> Land Rover >> 2017 >> Discovery Sport SE >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code Index DTC: Transmission Control Module (TCM) -- Discovery Sport/L550 >> Diagnostic Trouble Code Index DTC: Transmission Control Module (TCM) >> Description And Operation >> DTC P1710-86: Transmission Control Module Solenoid/Internal Ground Circuit - Signal invalid >> Possible Causes