Boost pressure sensor

The boost pressure sensor registers the absolute pressure (boost pressure and atmospheric pressure together) in the exhaust system and serves as a measured value generator or boost pressure control.

The boost pressure sensor is mounted directly on the intake air manifold and sealed off with an O-ring. The DDE control unit supplies the sensor with ground (M_LDF) and a supply voltage of 5 V (U_LDF).

The pressure is picked up by a hole in the sensor and a corresponding measurement voltage (A_LDF) is sent to the DDE control unit).


If the boost pressure sensor is defective, fault code 36 "boost pressure control" is stored,
- exhaust gas recirculation is deactivated and
- boost pressure control is deactivated