Home >> Land Rover >> 2015 >> Range Rover Autobiography >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Image Processing Module B - Low Line (IPMB - Low Line) -- Range Rover/L405 >> Diagnostic Trouble Code Index DTC: Image Processing Module B - Low Line (IPMB - Low Line) >> Description And Operation >> DTC U0447-29: Invalid Data Received From Gateway A - Signal invalid >> Possible Causes