Fault code FF1236?

[NSX2M4]

Good morning everyone,

My car threw a chassis error this morning and went into limp mode right after an exterior wash. Same weekly wash I've been doing for 4 years. Motor was not washed...
I downloaded bimmerlink since I had a Veepak lying around and scanned it.
It came up with this error under the motor section. (see image)
It kept displaying the error so I reset the fault and now all systems are clear on the car, plus limp mode has gone away.

The car is 100% stock and is due for a full service in July.
Brake fluid/systems check/oil change/etc. Warranty remaining.

Can someone please tell me what this code is? Can't find anything on the internet and maybe I'm not pulling it up correctly in BL.

Thanks.

[NSX2M4]

Any one???
The car is back to normal and drives fine.
This is the only code I cannot seem to clear and it always shows up when I scan the car for diagnostics.