Home >> Land Rover >> 2020 >> Discovery Sport Base >> Repair and Diagnosis >> General Information >> Specifications Index >> Diagnostic Trouble Code Index DTC: Battery Control Module (BCM) - Discovery Sport/L550 >> Diagnostic Trouble Code Index - DTC: Body Control Module (BCM) (G2165406) >> Description And Operation >> DTC B13D4-04: Right Daytime Running Lamp And Position Lamp Control - System internal failures >> Possible Causes