Solenoid valve N75 03C906283B

The charge pressure control solenoid valve N75 is screwed to the non-return valve for crankcase ventilation.

The charge pressure control solenoid valve N75 is clocked by the engine control unit and switches the control pressure (which consists of intake pressure combined with boost pressure) in the pressure capsule for charge pressure control. The pressure capsule operates the bypass valve (wastegate) which diverts part of the exhaust gases passed the turbine to the exhaust system. This regulates the turbine power and the boost pressure. Effects of functional failure If the valve N75 fails, the boost pressure is directly applied to the diaphragm in the pressure capsule. The maximum boost pressure is thus limited to the basic boost pressure value. Therefore the engine power is reduced.