Home >> Land Rover >> 2014 >> LR2 Base >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Diagnostic Trouble Code Index DTC: Fuel Fired Booster Heater Control Module (FFBHCM) >> Diagnostic Trouble Code Index DTC: Fuel Fired Booster Heater Control Module (FFBHCM) >> Description And Operation >> U0028-08: Vehicle Communication Bus A - Bus signal/message failures >> Possible Causes