Home >> Land Rover >> 2021 >> Range Rover SVAutobiography Dynamic Blk. >> Repair and Diagnosis >> Quick Lookups >> Common Specs & Procedures >> Diagnostic Trouble Code Index: Anti-Lock Brake System (Abs) -- Range Rover/L405 >> 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