Home >> Land Rover >> 2020 >> Discovery Sport Base >> Repair and Diagnosis >> General Information >> Specifications Index >> Diagnostic Trouble Code Index DTC: Restraints Control Module (RCM) - Discovery Sport/L550 >> Diagnostic Trouble Code Index - DTC: Restraints Control Module (RCM) (G2364183) >> Description And Operation >> DTC B0004-1A: Driver Knee Bolster Deployment Control - Circuit resistance below threshold >> Possible Causes