Home >> Volvo >> 2001 >> S40 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Electronic Control Module (ECM) Diagnostic Trouble Codes - 3 Of 3 (644 Body) >> ECM-AF: Leak Diagnostic Pump. Signal Missing. Permanent Fault (B4204T2 CVVT; 2000) >> Signal missing. Permanent fault >> Erasing diagnostic trouble code (DTC)