Home >> Jaguar >> 2021 >> XF S >> Repair and Diagnosis (Single Page) >> Quick Lookups >> Common Specs & Procedures >> General Information - Diagnostic Trouble Code (DTC) Index (LWB HVAC - PAM) -- XF/(X260) >> General Information >> Description And Operation >> Diagnostic Trouble Code Index - DTC: Infotainment Master Controller/Infotainment Slave Controller (IMC/ISC) (G2272336) >> DTC B1087-86: LIN Bus "A" - Signal invalid >> Possible Causes