Home >> Jaguar >> 2012 >> XJ Base >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> Diagnostic Trouble Code Index DTC: Transmission Control Module (TCM) -- XJ/X351 >> Diagnostic Trouble Code (DTC) Index DTC: Transmission Control Module (TCM) >> Description And Operation >> Transmission Control Module (TCM) >> DTC U2101-56: Control Module Configuration Incompatible - Invalid/incomplete configuration >> Possible Causes