Home >> Land Rover >> 2015 >> LR2 Base >> Repair and Diagnosis (Single Page) >> Drivelines & Axles >> Differentials & Drive Axles >> Diagnostic Trouble Code Index DTC: Rear Differential Control Module (RDCM) -- LR2/L359 >> Diagnostic Trouble Code Index DTC: Rear Differential Control Module (RDCM) >> Description And Operation >> DTC U0300-54: Internal Control Module Software Incompatibility - Missing Calibration >> Possible Causes