Home >> Land Rover >> 2020 >> Range Rover Evoque R-Dynamic HSE >> Repair and Diagnosis >> General Information >> Specifications Index >> Diagnostic Trouble Code Index DTC: TELEMATIC Control Module (TCU) -- Range Rover EVOQUE/L551 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: TELEMATIC Control Module (TCU) (G2153768) >> B117A-01: Backup Microphone - General electrical failure >> Possible Causes