Ok, I am here with the car at the wife's work place, and put my obd2 reader and at the transmission side I am getting this code at pending:
P0721
Output speed sensor circuit range performance.

Did not do any resource on this code, whats about,
As I have to drive it back home.


Thank you,

That's one of the cables I've got. It's perfect for that.

bosanci28, I sent you the link last week on the replied to your email.
Again, as civdiv mentioned I also think your problem is mechanical, not software... most likely you will need the transmission fixed.

You might be lucky just replacing the output sensor. Read this:

P0721 Output Speed Sensor Circuit Malfunction - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums

It looks like this guy wasn't so lucky.
http://www.justanswer.com/transmissi...ed-sensor.html

yeap, that's the guy from romania....

thanks,i will get that one,there
and it looks like it comes with usb cable and the software!

thank you,

will get that one.
thanks!

okay,got home ,
and hook up my scanner again,and that code is nowhere to be found...
it run away..i guess.


called the dealer ,and said $60 /order 2 days for that output speed sensor,oem part: 24341421193 and i think cross reference is : 24341218551 from here:

RealOEM.com * BMW E53 X5 4.6is A5S440Z MOUNTING PARTS CONTROL UNIT,
nr#6. (pulse generator ),
and of course is inside the tranny!,

so now i have few things to order,and was hopping that i can get them locally !,but the oil i think only online can get it.

so i must get :

-tranny oil (zf lifegurad 5)

-tranny filter kit (here)

-output speed sensor (here)-or will get it directly from the dealer.


and i guess after will have to do a coolant radiator replace also.

thank you,

This reminds me of a few posts on some other BMW forums, where the insulation of the wires around the plastic connector that hooks up to different sensors got frayed, giving all kind of codes. One guy actually examined the wires around the connectors and noticed that the insulation will split and degrade just like the plastic cooling parts.

I just thought to throw this out there maybe this will help some people who read this post and have some "bad sensors issues".

The P0721 code is very common on the 5HP24. It doesn’t mean there’s anything wrong with the speed sensor, just that it has detected an output shaft speed that the controller wasn’t expecting to see. In other words, a clutch is slipping.

Phil