Home >> Land Rover >> 2021 >> Range Rover Base >> Repair and Diagnosis >> General Information >> Specifications Index >> Diagnostic Trouble Code Index DTC: Dynamic Response Control Module (DRM) -- Range Rover/L405 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: Dynamic Response Control Module (DRM) (G2016243) >> DTC C104A-28: Front Axle Piston Pressure Regulating Valve - Signal bias level out of range/zero adjustment failure >> Possible Causes