Home >> Land Rover >> 2016 >> LR4 Base >> Repair and Diagnosis >> Accessories & Equipment >> Anti-Theft Systems >> Diagnostic Trouble Code Index DTC: Driver/Passenger Door Control Module (DDM/PDM) -- LR4/L319 >> Diagnostic Trouble Code Index DTC: Driver/Passenger Door Control Module (DDM/PDM) >> Description And Operation >> DTC B11D1-86: LIN Bus "C" - Signal invalid >> Possible Causes