Home >> Volvo >> 2004 >> S40 Base, 1.9 27 >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Combined Instrument (CI) & Driver Information Module (Dim) Diagnostic Trouble Codes (644 Body) >> CI-10 Engine Coolant Temperature (ECT). Faulty Signal (B4204T3 (Ca) (Us); 2001-2002) >> Faulty signal