Home >> Land Rover >> 2015 >> LR2 Base >> Repair and Diagnosis (Single Page) >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Transmission Control Module (TCM) -- LR2/L359 >> Diagnostic Trouble Code Index DTC: Transmission Control Module (TCM) >> Description And Operation >> DTC U0401-31: Invalid Data Received From ECM/Pcm A - No Signal >> Possible Causes