Home › Land Rover › 2017 › Range Rover Sport HSE Dynamic › Repair and Diagnosis (Single Page) › Quick Lookups › DTC Index › Diagnostic Trouble Code Index DTC: Telematics Control Module (TCU) -- Range Rover Sport/L494 › Diagnostic Trouble Code Index DTC: Telematics Control Module (TCU) › Description And Operation › DTC U201A-51: Control Module Main Calibration Data - Not programmed › Possible Causes