[Vern8892]

When I install the unit and turn on the car I get "drivetrain Malfunction" which goes into limp mode. I took it to the shop and they pulled up the codes as follows:
120408 Charge pressure control: switch off as a consequence
123004 wastegate activation: line disconnection

Its a 2012 328i with <40K miles. I have the pneumatic solenoid.
No errors when I take the unit off though.

Does anyone have any ideas that can point me in the right direction?

[Okhan19]

Did you connect it right, when i use to use BMS I had mixed up the wires and got charge pressure control error. There should be a rainbow connector and all brown connector.

[Vern8892]

I believe so. I have rainbow and brown as well as blue which goes into my boost solenoid. If I had to guess the issue is somewhere in there....

Oh and purple which the instructions say is not used anymore.

[Straasha]

Originally Posted by Vern8892

I believe so. I have rainbow and brown as well as blue which goes into my boost solenoid. If I had to guess the issue is somewhere in there....

Oh and purple which the instructions say is not used anymore.

If you have the v1 module, you need to hook up the purple connection. It wasn't removed until the v2 module.

[Vern8892]

How do I know which model I have?

[Vern8892]

into the Mass Air Flow sensor on my intake correct? and do you think that being disconnected would give me those codes?

[Vern8892]

Originally Posted by Straasha

If you have the v1 module, you need to hook up the purple connection. It wasn't removed until the v2 module.

Ahh! Tried hooking all the connectors up. Got a chassis malfunction, turned it off and on, rode around for about a half hour feeling all that extra whp!
Thanks for that tip!