Home >> Land Rover >> 2022 >> Defender 90 >> Repair and Diagnosis >> General Information >> Specifications Index >> Diagnostic Trouble Code Index DTC: Driver Assistance Domain Controller (DADC) -- Defender/L663 >> Diagnostic Trouble Code Index - DTC: Driver Assistance Domain Controller (DADC) (G2473033) >> Description And Operation >> Driver Assistance Domain Controller (DADC) >> DTC U0400-86: Invalid Data Received - Signal invalid >> Possible Causes