Home >> Volvo >> 2007 >> S60 Base, FWD >> Repair and Diagnosis >> Electrical >> Body Electrical >> Central Electronic Module (CEM), Rear Electronic Module (Rem), Upper Electronics Module (UEM) - Diagnostic Trouble Codes - 1 Of 13 >> CEM-1A25: Relay Ext X2-Power Supply. Signal Too Low. Intermittent Fault (Aw55-50/51SN; 2001-2004) >> Signal too low. Intermittent fault