Home >> Volvo >> 2002 >> S60 Base, 2.4 61, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Audio Module (AUM), Phone Module (PHM), Road Traffic Information (RTI) - Diagnostic Trouble Codes >> AUM-4001: Antenna Amplifier 1. Signal Too Low. Permanent Fault (2001-2009) >> Signal too low. Permanent fault >> Radio equipment, replacing >> Bumper antenna