Home › Land Rover › 2015 › Range Rover Base › Repair and Diagnosis (Single Page) › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Dynamic Response Control Module (DRM) -- Range Rover/L405 › Diagnostic Trouble Code Index DTC: Dynamic Response Control Module (DRM) › Description And Operation › DTC C1B11-18: Pressure Control Valve - Circuit current below threshold › Possible Causes