need help with code P1511
 

so my car is throwing a code
P1511 DISA Control Circuit Electrical
i've tried searching the forum and googling it but i can't find much info about it...help me...please...:confused:

The software that came with my reader says:

Manf Cntrl Veh Spd
Idle Speed Control Auxiliary Inputs.

hmm I don't know what that is...
do you know how I should go about to try and fix the code?

Have you done any work on the car recently or modified the intake?

so it turns out it was the disa valve/adjuster unit
replaced that and the code went away

Huh.

Thanks for following up with your solution - it's bound to help someone else.

got a p1511 code from bmw and they told me it was disa electrical and shouldnt hurt performance. It wont pass emissions cause of the check engine light. I guess I should replace the valve??? It's my first bmw..98 318ti. I love the car but it seems slow. It doesn't make any strange noises from the disa and seems to idle fine and accelerate smoothly..but there is not as much power as I feel there should be. The ford focus is faster....DANG.... any help would be greatly appreciated.

yeah...your situation sounds kinda like mine also my first bmw/car also a 98, its an automatic though, i went to get my car inspected and failed...turned out i had 5 codes... and my cel bulb was missing so who knows how long it had been there for since i got it two years ago after replacing the valve i have to say i didn't really feel much of a difference its not cheap either...but i did pass emissions after getting rid of all the codes theres also a disa simulator that lpcapital made but i don't know much about it or if you should use it in this scenario...

$$$$
 

Guess it's time to spend some money...

i just got my car smogged and i have the error code now. P1511 DISA Control Circuit Electrical. anyone have any idea how to clear this or what needs to fixed to clear this ?

See posts #5 and #6 above.

thanks i see one online for about 170.00 USD hopefully its any easy install to replace , anyone know? also i see a connection on the unit itself , and i have an unplugged wire next to my manifold do you think if its not plugged in i would get this fault?

http://www.ecstuning.com/BMW-E36-318.../DISA/ES25477/

Absolutely!

If you have an unplugged wire near your intake and there is seemingly no wire leading to the DISA, this is likely your problem. If it is unplugged, it would definitely trigger the error code. Was it giving the error code before you took it in to get smogged?

not sure i had the light on already for a cam sensor which i had replaced to do smog but now have this error code