U1127 and U121E

[hemz]

Hi,

I have a 2021 corsa sri turbo with the engine management light on. There are two faults codes:

• U1127 - loss of serial communications for class 2 devices

• U121e

The car feels like its not idling correctly as well. Any ideas what it could be?

[hemz]

Any information on this would be highly appreciated!