F48 DTC 120308 Charging pressure control: Pressure too low - unknown

[autocar20]

Hello All,

I have a BMW F48 X1 B38 engine 2016. Car drives perfect with full power everything looks good. But sometimes drivetrain error appears on cluster and Head unit, but car still runs perfect. No loss of power no limp mode.

DTC 120308 Charging pressure control: Pressure too low  - unknown

I performed smoke test at intake manifold, intercooler, all pressure hoses, no leak.

I checked electric waste gate actuator and distance moving is good ( while ignition is switch on and off)

No turbo crack, no coolant leak

Air filter is new and oil service done.

I performed DME, ESP update with Esys to latest i-step still same.

I noticed that the DTC come after 50 Km of driving, at any speed or any style of driving.

Any idea will be appreciated.