Home >> Volvo >> 2009 >> S60 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) - Diagnostic Trouble Codes And Associated Procedures - 8 Of 14 >> ECM-6000: Air Conditioning (A/C) Relay Signal. Signal Missing. Permanent Fault (B5254T2; 2003-2004) >> Signal missing. Permanent fault