Home >> Land Rover >> 2017 >> Range Rover Autobiography >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Diagnostic Trouble Code Index DTC: Telematics Control Module (TCU) -- Range Rover/L405 >> Diagnostic Trouble Code Index DTC: Telematics Control Module (TCU) >> Description And Operation >> DTC B1252-87: USB Port - Missing message >> Possible Causes