Home › Land Rover › 2015 › LR2 Base › Repair and Diagnosis › Quick Lookups › DTC Index › 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 U0401-68: Invalid Data Received From ECM/Pcm - Event Information › Possible Causes