Home >> Land Rover >> 2020 >> Range Rover SVAutobiography Dynamic >> Repair and Diagnosis >> Quick Lookups >> Common Specs & Procedures >> Diagnostic Trouble Code Index DTC: Transmission Control Module (TCM) -- Range Rover/L405 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: Transmission Control Module (TCM) (G2364188) >> DTC U0146-87: Lost Communication With Gateway "A" - Missing message >> Possible Causes