Home › Land Rover › 2016 › LR4 Base › Repair and Diagnosis › Restraints › Restraints Control Systems › Diagnostic Trouble Code Index DTC: Restraints Control Module (RCM) -- LR4/L319 › Diagnostic Trouble Code Index DTC: Restraints Control Module (RCM) › Description And Operation › DTC U201A-51: Control Module Main Calibration Data - Not programmed › Possible Causes