Error Code Limp Mode P136D

[evilspiritM3]

My 2011 E90 M3 (15,000 miles) has been going into limp mode on me when I sit idle for a couple of minutes. The engine is warm, and I am at a long light or in traffic when it happens. When I restart the car the code clears, but has shown up again as soon as 10-15 minutes later when I am at idle again.

I connected my code reader last time it happened and got P136D which does not show up in any of the databases I searched, including on the forum. Has anyone seen this before? Thanks for the help.

Either way I am taking it to the dealer to see if I can recreate it for them.