Home >> Jaguar >> 2018 >> XF S, AWD >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code Index DTC: Anti-Lock Brake System Control Module (Abs) - LWB -- XF/X260 >> Diagnostic Trouble Code Index DTC: Anti-Lock Brake System Control Module (ABS) - LWB >> Description And Operation >> Anti-Lock Brake System Control Module (Abs) >> DTC U0074-81: Control Module Communication Bus "B" Off - Invalid serial data received >> Possible Causes