Home >> Volvo >> 2003 >> V70 Base, 2.5 59 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes (DTC) - 12 Of 14 >> ECM-930D: Control Module Communication Problems. Signal Too Low (B5244T5; B5254T2; B5254T4; 2005-2007) >> Fault-tracing information