Home >> Jaguar >> 2013 >> XF 3.0, AWD >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code: Adaptive Speed Control Module (ASCM) -- XF/X250 >> Diagnostic Trouble Code (DTC) Index DTC: Adaptive Speed Control Module (ASCM) >> Description And Operation >> DTC B1A84-81: Car Configuration Data - Invalid serial data received >> Possible Causes