Home >> Volvo >> 2004 >> S60 Base, 2.5 59, AWD >> Repair and Diagnosis >> Electrical >> Body Electrical >> Central Electronic Module (CEM), Rear Electronic Module (Rem), Upper Electronics Module (UEM) - Diagnostic Trouble Codes - 12 Of 13 >> Rem-6F54: Unlocking Relay, Central Locking, Tailgate. Signal Missing Or Too Low. Permanent Fault (2001) >> Diagnostic trouble code information