It is likely that a sensor somewhere was triggered by a change in the parameters associated with the Sport + mode. It could be something very minor but its probably best to get it checked. I had something similar a few months back although with a diesel engine and the car behaved very oddly with very sluggish power despite high revs and a refusal to change up through the gears even using manual mode. Once I stopped and turned the engine off and on again the "check engine" light disappeared and the car drove normally again.
The dealer had a look at it and thought they had solved the problem only to have it recur almost immediately. They then replaced a faulty sensor.
The dealer had a look at it and thought they had solved the problem only to have it recur almost immediately. They then replaced a faulty sensor.
