Turbo Boost Sensor: Description and Operation

Boost Pressure Sensor

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

Troubleshooting
If the turbo pressure sensor is defective, the following faults may be stored:
- 3F00, 3F01, 3F03, turbo pressure sensor

Consequences:
- Turbo pressure control is deactivated
- Exhaust gas recirculation is deactivated