Home › Land Rover › 2013 › Range Rover Base › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Image Processing Module B - High Line (IPMB - High Line) -- Range Rover/L405 › Diagnostic Trouble Code Index DTC: Image Processing Module B - High Line (IPMB - High Line) › Description And Operation › DTC U1A4B-06: Control Module Processor B - Algorithm based failures › Possible Causes