Home >> Volvo >> 2004 >> S40 Base, 1.9 27 >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Intake And Exhaust System - Removal, Replacement And Installation (644 Body) >> Intake & Exhaust (B4204T4; 2003-2004) >> Boost pressure sensor 1, replacing