geo41e

Hi guys.

Wondering if anybody out there can give me some help here.

So I ran a scan via BimmerLink and BimmerTool Lite, got the following error:
*2AA8 - 2AA8: 0x2AA8 variable intake system actuator: control*

After clearing the code, and went for a drive and then rescan. Code came up again.
Note - No engine light at anytime, however did feel a slight stutter/hunt on idle.

Did some reserarch, and can only find a relation to the DISA valve.
So I monitored the DISA valves live via a dashboard, and the readings are:

After Code Reset
Actual DISA Position: 5%
DISA1 - Large: Spiked to 70% During start up - then stayed on 15%
DISA2 - Small: Spiked to 70% During start up - then stayed on 15%

After Scanning and seeing 2AA8 Code:
Actual DISA Position: 5%
DISA1 - Large: 15% (Even during start up)
DISA2 - Small: 15% (even during start up)

I now have tried to replicate the above, but for some reason I can't. That is, after clearing the code - when I crank the car or go on reds, DISA 1 and 2 will just stay on 15% value.

Wondering if anybody here has any recommendations moving forward ?
I'm thinking of taking out the DISA and see if it actually moves as well as if it moves when I go on reds... problem is, I'm not even sure where the DISA is, even after looking at RealOEM exploded diagrams...since there are two units ?

From RealOEM

Thanks in advanced for any help guys

geo41e

sooooooo
Had a peak...and saw this:



...think this might be the cause
thing is...i cant find the bloody cable now...

geo41e

So guys..
found the cable and all is well..

Admin, if you wanna delete this thread.all good

Sorry for the lack of attention to detail on my part !

08535

Glad you found it. What did you do unplug the cable and forgot you unplugged it and where it went? 😏

geo41e

lol

So a few months back - maybe 3 - 4, my mechanic replaced all upper seals on the rocker cover and Oil heat seals ?
Now that time till now Ive had no engine lights, however after getting my BT - OBD adapter + Bimmercode and Bimmerlink...the scans showed that 2AA8 error...

So I'm assuming my mechanic didn't plug it back in...

I'm surprised it didn't throw any engine light/limp mode ?