Home >> Land Rover >> 2021 >> Range Rover Base >> Repair and Diagnosis >> Quick Lookups >> Common Specs & Procedures >> Diagnostic Trouble Code Index DTC: Interactive Display Module A (IDMA) -- Range Rover/L405 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: Interactive Display Module A (IDMA) (G2034065) >> DTC U0055-88: Vehicle Communication Bus D - Bus Off >> Possible Causes