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 - 13 Of 13 >> UEM-00A1: Tire Pressure Sensor. Signal Missing (2003-2009) >> Signal Missing