Home >> Land Rover >> 2021 >> Range Rover SVAutobiography Dynamic Blk. >> Repair and Diagnosis >> Quick Lookups >> Common Specs & Procedures >> Diagnostic Trouble Code Index DTC: Parking Aid Control Module (PAM) -- Range Rover/L405 >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: Parking Assist Control Module (PAM) (G2166391) >> DTC U0046-81: Vehicle Communication Bus C - Invalid serial data received >> Possible Causes