CEL on with engine shudder on shut off - E70 X5

[docsalr]

Hello,

I have a 2011 X5 E70 35D with 115,000 kms. Last week when I shut off the car it vibrated a bit. The CEL came on with 2 fault codes:

Module $07EC
Module $07E8

I erased the codes and the car runs fine without any CEL. However, when I shut it off it vibrates a bit. The CEL is back on when I restart the car.

Otherwise the car runs fine. Could it be the throttle body (part number 11717804384)?

I would be grateful if someone could help me with this.

Thanks!