Home >> Land Rover >> 2013 >> Range Rover HSE >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Diagnostic Trouble Code Index DTC: Occupant Classification Sensor Control Module -- Range Rover/L405 >> Diagnostic Trouble Code Index DTC: Occupant Classification Sensor Control Module >> Description And Operation >> DTC U201A-54: Control Module Main Calibration Data - Missing calibration >> Possible Causes