Home >> Volvo >> 2004 >> S80 Base, 2.5 59, FWD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> AEM, CEM & Rem Diagnostic Trouble Codes - 8 Of 12 >> CEM-8D01: Ignition Switch Lighting And High-Mounted Stop Lamp (Led). Signal Too Low (2004) >> Signal too low. Permanent fault