Home >> Land Rover >> 2021 >> Discovery S >> Repair and Diagnosis (Single Page) >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code Index: Anti-Lock Brake System (Abs) -- Discovery/L462 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: Anti-Lock Brake System Control Module (Abs) (G2261284) >> DTC C101A-81: Vacuum Pressure Sensor - Invalid serial data received >> Possible Causes