Home >> Land Rover >> 2020 >> Discovery Sport Base >> Repair and Diagnosis >> Quick Lookups >> Common Specs & Procedures >> Diagnostic Trouble Code Index DTC: Adaptive Speed Control Module (ASCM) - Discovery Sport/L550 >> Diagnostic Trouble Code Index - DTC: Adaptive Speed Control Module (ASCM) (G2968247) >> Description And Operation >> DTC U1A00-87: Private Communication Network - Missing message >> Possible Causes