Home › Land Rover › 2014 › Range Rover Autobiography › Repair and Diagnosis › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATCM) -- Range Rover/L405 › Diagnostic Trouble Code Index DTC: Automatic Temperature Control Module (ATCM) › Description And Operation › DTC B13C2-49: Front Windscreen/Windshield Misting Sensor - Internal electronic failure › Possible Causes