Home >> Land Rover >> 2014 >> Range Rover Base >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index DTC: Body Control Module (BCM) -- Range Rover/L405 >> Diagnostic Trouble Code Index DTC: Body Control Module (BCM) >> Description And Operation >> DTC B146B-04: Left Front Side Marker Lamp - System internal failures >> Possible Causes