Home >> Land Rover >> 2021 >> Range Rover Base >> Repair and Diagnosis >> Quick Lookups >> Common Specs & Procedures >> Diagnostic Trouble Code Index DTC: Transmission Control Module (TCM) -- Range Rover/L405 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: Transmission Control Module (TCM) (G2364188) >> DTC P1935-86: Brake Switch/Sensor Signal - Signal invalid >> Possible Causes