Boost pressure sensor (P_BOOST), not plausible.
Compare the values from the boost pressure sensor, the ambient pressure sensor and the exhaust pressure sensor when the engine is off but the ignition is on. They should both show a value corresponding to the current ambient pressure. Replace sensor if it deviates more than 0.35 bar. To invalidate DTC after repair. Make sure engine is warm and keep ignition on without the engine moving. Fault should be invalidated within 30 seconds.
What you'll see
No driver-visible symptom recorded.
System reaction
The correct amount of fuel cannot be determined correctly. Engine performance may be degraded
Diagnostic depth
The boost pressure is not equal to the ambient pressure and/or the exhaust pressure while engine is not moving
The boost pressure sensor shows too high or too low value compared to other pressure sensors. Connectors or wiring is faulty.