[Sookie123]

Hello team,

I have recently gotten the common drivetrain malfuntion error message on my idrive display. after some diagnostics with my OBDII reader. I have recorded the following error codes.

1. 120408 Charging pressure control :Switch-off as consequential reaction.

2. 123004 Wastegate valve, activation: Line disconnection.

3. LIN, message; intelligent battery sensor (IBS): Missing.

Any help solving these would be greatly appreciated.

[Arkin]

I had a drivetrain malfunction before and read some threads that some causes are from the turbo to IC to the Throttle. Check that line to see if any pressure leaks.

[thejeremyman9]

Originally Posted by Arkin

I had a drivetrain malfunction before and read some threads that some causes are from the turbo to IC to the Throttle. Check that line to see if any pressure leaks.

He can check that but his codes are not the typical boost leak codes. #2 suggests something with the WG, #1 likely due to #2