Home › Land Rover › 2023 › Discovery S › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Body Control Module (BCM) -- Discovery/L462 › General Information › Description And Operation › Diagnostic Trouble Code Index - DTC: Body Control Module (BCM) (G2165406) › DTC B1DB6-46: Rear Roof Blind Module - Calibration/parameter memory failure › Possible Causes