Home >> Land Rover >> 2021 >> Defender 90 X >> Repair and Diagnosis (Single Page) >> 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 C1A67-86: Forward Looking Sensor - Signal invalid >> Possible Causes