Home >> Volvo >> 2009 >> S60 Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) - Diagnostic Trouble Codes And Associated Procedures - 5 Of 14 >> ECM-3100: Engine Speed (Rpm) Sensor. Signal Missing. Permanent Fault (B5234T3; 2002-2004) >> Signal missing. Permanent fault