Home >> Volvo >> 2009 >> S40 T-5, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Global Positioning System (GPS), Phone Module (PHM), Subwoofer (Sub) Module, Traffic Message Channel (TMC) Module Diagnostic Trouble Codes (544 Body) >> PHM-E001: Control Module Communication Software Error (2009-2012) >> Faulty Communication (2008-2011)