Home >> Land Rover >> 2021 >> Defender 110 S >> Repair and Diagnosis >> Quick Lookups >> Common Specs & Procedures >> Diagnostic Trouble Code Index DTC: Cruise Control Module -- Defender/L663 >> Diagnostic Trouble Code Index - DTC: Cruise Control Module (G2818898) >> Description And Operation >> Cruise Control Module (CCM) >> DTC U0046-88: Vehicle Communication Bus C - Bus off >> Possible Causes