Zero Quantity Adaption Cylinder 6

[hartwa]

Hey guys....

Started getting this code 004b25 thar last week. Read up on it and i am confused....do i need to replace the injector or adjust the adaption? I also read that the adaption will adjust itself over time. Does that mean this might go away on its own?

The car drives fine...i don't notice anything.

2013 x5 35d.

Any advice is appreciated.

Hartwa

[yco]

normally such an error cause rough idle but you re saying car runs fine.. adaption is a never ending relearning process that yes it might go away as you ve said but im not sure it ll take away the codes also.. if i were you i d keep eye on idle closely and do nothing until feeling lose of power or idle changes..

[Juno01]

Deleted? Have the injectors ever been replaced? I'm not sure if adaptation values can be "adjusted" manually, maybe reset. I would first make sure the injector codes are correct.

I was getting this error (cylinder 3) and the only thing that fixed it was swapping the injector codes 2<=>3 then driving for a few days then swapping them back. I read that the dde is the actual culprit and doing this made the dde recognize the values.

If you don't have ista definitely get it.

[hartwa]

Thanks both of you.....i wil just keep driving it for now and see...
...i do have carly for bmw and i think i got ista on my labtop but never used it....i am pretty sure i bought a cavle for it.

[hartwa]

Been over a month and i am tired of seeing that check engine light. I will try swapping the codes with ista. I am a nube with this program... an anyone recomend a tutorial?

[hartwa]

Hey Juno01....how did you swap the codes? I assume you use ista....do you just read them and then edit the one giving you the issue?

[sunny_j]

What do you mean by swapping codes?
Have you reset the adaptations for injector 6? You'll need an icom cable as the kdcan cable is too slow

[hartwa]

Juno01 said he swapped codes in the previous post...i have a cable i bought from bimmer geeks... how do i tell if it is icom?

Appreciate the help.

[hartwa]

I forgot to mention that i cleaned the intake manifold when i changed out a vacuum solenoid a few months ago. I have read that people have to do a wheel reset adaption after a carbon clean....

I am also getting a smoothness error in that cylinder along with the zero quantity adaption.

[hartwa]

So i decided to tackle this this weekend. I want to order my icom cable and software today.... where is the best place to buy?

[sunny_j]

what's the coolant temp after a 20-30 min drive on the highway?

[hartwa]

I will get that on the way home from work tonight....thanks for the help.

[hartwa]

It ranged from 70 to 74°C

[sunny_j]

There's your issue. Replace the thermostat and the zero quantity codes should go away. 87-88c is operating temp

[hartwa]

Awesome.... I had to replace mine on my 335d (same engine). That one i noticed in the fall would not blow warm enough air.

I will get it ordered today and let you know how it works out after I install it...thanks again.

[hartwa]

Just curious.... what is the link between the zero quanity injector code and low coolant temp? I did notice that when i worked reset the check engine light it would usually come back after the engine was warm...never on a short trip.

[sunny_j]

The friction produced during opening and closing of the piezo injectors causes wear on the nozzle seat of the nozzle needle. This changes the injection quantity over the service life, which is compensated for by correcting the actuation duration. Injection quantity correction comprises the following:
• Zero quantity calibration
• Main injection quantity correction
The following function requirements are required for
this:
• Engine speed between 1,000 and 2,600 rpm
• Deceleration mode or driving operation greater
than zero
• Engine oil temperature greater than 80 °C

That's for CDI but it gives you an idea. Our motors run at 88c instead of 80 on CDI

[hartwa]

That fixed it....got it in last night and went to work and back without the light coming back on. First time it did not come back on in 4 months. Thanks a lot for the help...really appeeciate it. Dealer is an 1.5 hr drive...so this saved me an all day trip to get it fixed...

Thanks again

[hartwa]

Looks like i spoke too soon....came back on last night and once again this morning. It seems like it is less frequent now though.

Should i reset the adaptions?

[Juno01]

Swap #5 and #6 injector codes, delete faults, drive for a few days, then swap them back. This worked for me but then I had the injectors out prior to getting the fault so I had recoded all injectors.

[hartwa]

I try it this weekend but i curently have inpa and a Pro kdcan cable from bimmer geeks. Can i do it with that? i know you mentioned getting ista... do i need a different cable?

[Juno01]

I don't use inpa enough but probably, don't know where. Ista+ can be used with the same cable for what you are doing.