Home >> Land Rover >> 2016 >> LR4 Base >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Diagnostic Trouble Code Index DTC: General Proximity Sensor Module (GPSM) -- LR4/L319 >> Diagnostic Trouble Code Index DTC: General Proximity Sensor Module (GPSM) >> Description Of Operation >> DTC U0001-87: High Speed CAN Communication Bus - Missing message >> Possible Causes