Home >> Land Rover >> 2017 >> Range Rover Autobiography >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code Index DTC: Head-Up Display Cooling Fan Control Module -- Range Rover/L405 >> Diagnostic Trouble Code Index DTC: Head-Up Display Cooling Fan Control Module >> Description And Operation >> DTC U0011-81: Medium Speed CAN Communication Bus Performance - Invalid Serial Data Received >> Possible Causes