Home >> Land Rover >> 2020 >> Discovery Sport Base >> Repair and Diagnosis >> General Information >> Specifications Index >> Diagnostic Trouble Code Index DTC: Anti-Lock Braking System Control Module (Abs) - Discovery Sport/L550 >> Diagnostic Trouble Code Index - DTC: Anti-Lock Braking System Control Module (Abs) (G2294806) >> Description And Operation >> DTC U0404-81: Invalid Data Received from Gear Shift Control Module A - Invalid serial data received >> Possible Causes