Home >> Volvo >> 2009 >> S80 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 10 Of 11 >> ECM-U012086: Lost Communication With Starter/ Generator Control Module. Bus Signal / Message Failures. Signal Invalid (B6324S4; 2011-2012) >> Fault-Tracing Information