Home >> Volvo >> 2008 >> S40 T-5, FWD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Central Electronic Module (CEM) Diagnostic Trouble Codes - 7 Of 10 (544 Body) >> CEM-De11: Communication With ECM Control Module. Signal Missing (B5244S7; 2005-2010) >> Signal Missing (2004-07)