Home >> Volvo >> 2004 >> S80 Base, 2.5 59, FWD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> AEM, CEM & Rem Diagnostic Trouble Codes - 6 Of 12 >> CEM-5F13: Relay, Auxiliary Heater. Signal Too Low. Permanent Fault (B6294S; 2000-2001) >> Signal too low. Permanent fault