Error codes for TA and Secondary Air System

[smellym3]

Hi all I am running into an issue with my E92 M3. I got the following codes:

2B65: Idle controller monitoring cold start strategy
2B0D: Idle actuator monitoring bank 1
2B57: Engine emergency program activated
27B0: Secondary air system throughput Bank 1

I replaced both throttle actuators, secondary air pump, secondary Air Injection Control Valves, and ICV valve. After replacing all these parts, the same codes are coming back, and the car keeps going into limp mode, and this usually happens on cold starts. I will turn the car on and off, and it will go away, or I will let the car warm up and clear the codes, and the car drives fine like nothing ever happened. My tech believes it might be something with the air rails and carbon build up but I'm not sure. Any chance someone has also run into this issue of the car going into limp mode with these codes and how to fix the issue? Thanks for the help.