Home >> Land Rover >> 2021 >> Defender 110 S >> Repair and Diagnosis >> Quick Lookups >> Common Specs & Procedures >> 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 U0046-88: Vehicle Communication Bus C - Bus off >> Possible Causes