W220 S350 Throttle responce

[Mercsys]

Hi all, My 100k S350 is currently showing a CEL but is not exhibiting any other problems, however this morning after a massive wheel spin in the rain the throttle response had a 3-5 second delay, very disconcerting in traffic. Once stationary it exhibited the same lag and would only rev to ~4k and again slow to rev. I switched of and restarted, this seems to have cleared the problem. Still showing the CEL.
Any ides what mode or other it went into or why?

 

[BlackC55]

The only way you will know the cause is to get it plugged into a Star.

It could be a faulty throttle pedal amongst other things.