Home >> Volvo >> 2007 >> V50 Base, 2.4 39 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Transmission Control Module (TCM) Diagnostic Trouble Codes - 2 Of 2 >> TCM-0A31: Control Module Communication. Signal Missing From Engine Control Module (ECM) (Aw50/51 AWD; 2005-2010) >> Diagnostic Trouble Code (DTC) Information TCM-0A31 >> Fault-Tracing Information