Home >> Volvo >> 2007 >> S40 Base, 2.4 39, Standard >> Repair and Diagnosis >> Electrical >> Body Electrical >> Accessory Electronic Module (AEM) And Central Electronic Module (CEM) Diagnostic Trouble Codes (544 Body) >> CEM-1A41: (A) Ignition Switch. Faulty Signal (2004-2005) >> Faulty Signal (2006, 2007)