Home >> Volvo >> 2004 >> S80 Base, 2.5 59, FWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control Module (ECM) Diagnostic Trouble Codes - 2 Of 11 >> ECM-126D: Boost Pressure Sensor. Signal Too Low (B5254T2; B6294S2; B6294T; 2005-2006) >> Signal too low / signal too high