Those are throttle codes. I always start with cleaning the throttle and doing a computer re-set to re-learn idle and adaptation as it will be confused after removing the carbon build up and years of self adaptation. Remove the throttle, open the butterfly flap, and brush/ wipe it out back to clean and smooth. Re install, then disconnect your battery terminals and touch positive and negative together for 5 minuets. This is how you reset your ecus's learned values.

Basically, your throttle has gone beyond its self adaptation parameters and needs to be cleaned/ reset. What you are feeling is the car going into limp mode (no power). I fix throttle issues this way 9/10 times rather than needing a new throttle.