Originally Posted by KUSH
I have ordered a disa the one on the outside of the manifold or right hand if you are looking from in front of the engine. This is disa 1 and is a simple repair I didn't get a code for disa 2 as it is activated after 4000 rpm & has nothing to do with flat spotting or stalling. The damaged thermostat can cause over fueling & you may as well replace the water pump as you take it out any way. The inside disa would be a bigger job to replace so do the easier one first
Not sure if you have come across this site and this page before, but here:
BMW TIS - N52 engine, intake manifold: E60, E61, E63, E64, E65, E66, E87, E90, E91
It seems DISA motor 1 is indeed the one on the outside easier to see and access.
Apart from the error that you are getting pointing to this DISA flap, what symptoms are you experiencing with the engine performance or noises etc?
Please keep us posted - very interested to hear more about your problem and as you progress with solving it.