Home › Land Rover › 2022 › Defender 110 S › Repair and Diagnosis › General Information › Specifications Index › Diagnostic Trouble Code Index DTC: Near Field Sensing Module (NFSM) -- Defender/L663 › Diagnostic Trouble Code Index - DTC: Near Field Sensing Module (NFSM) (G2807245) › Description And Operation › Near Field Sensing Module (NFSM) › DTC U201A-46: Control Module Main Calibration Data - Calibration/Parameter memory failure › Possible Causes