Home >> Land Rover >> 2015 >> Range Rover Autobiography >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code Index DTC: Transmission Control Module (TCM) -- Range Rover/L405 >> Diagnostic Trouble Code Index DTC: Transmission Control Module (TCM) >> Description And Operation >> DTC P2793-64: Gear Shift Direction Circuit - Signal plausibility failure >> Possible Causes