Home › Land Rover › 2020 › Discovery Landmark › Repair and Diagnosis (Single Page) › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: CHASIS Control Module (CHCM) -- Discovery/L462 › General Information › Description And Operation › Diagnostic Trouble Code Index - DTC: Chassis Control Module (CHCM) (G2412900) › DTC U201A-57: Control Module Main Calibration Data - Invalid/incomplete software component › Possible Causes