Home >> Jaguar >> 2018 >> XF S, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Diagnostic Trouble Code Index DTC: Infotainment Master Controller (IMC) - LWB -- XF/X260 >> Diagnostic Trouble Code Index DTC: Infotainment Master Controller (IMC) - LWB >> Description And Operation >> Infotainment Master Controller/Infotainment Slave Controller (IMC/ISC) >> DTC B121C-93: Hard Drive - No operation >> Action