Home >> Volvo >> 2000 >> S40 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Electronic Control Module (ECM) Diagnostic Trouble Codes - 3 Of 3 (644 Body) >> ECM-Dd: Communication, Transmission Control Module (TCM). Faulty Signal. Intermittent Fault (B4204T3; 2004) >> Faulty signal. Intermittent fault