Home >> Volvo >> 2002 >> S60 Base, 2.4 61, Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control Module (ECM) - Diagnostic Trouble Codes And Associated Procedures - 9 Of 14 >> ECM-641A: Camshaft Control, Exhaust. Faulty Signal (B5254T4; 2004) >> Faulty Signal