Home >> Jaguar >> 2017 >> XF S, AWD >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code Index DTC: Body Control Module (BCM) - LWB -- XF/X260 >> Diagnostic Trouble Code Index DTC: Body Control Module (BCM) - LWB >> Description And Operation >> Body Control Module (BCM) >> DTC B1B01-81: Key Transponder - Invalid serial data received >> Possible Causes