How to clear P0715 code
 

New transmission still get P0715 after clearing with OBDII. Car only moves if i give it 1/2 throttle and then only very slowly. How to clear properly?

new trans? unless there's a problem with it OR the codes in the trans ecu are still there, p0715 will always come back. good luck, chuck.

To get rid of the code P0 715, you must replace the trans speed sensor(conductor plate) & then have that code erased from the trans computer.

thank you, been out of town. I was able to have someone clear the code through STAR, yet the transmission still does not behave normally. Cleared adaptions, tried adaption,etc. Will not shift from 1st many times, then after a while it shifted into 2nd fine, now it just bucks back and forth.

Does the module need to be flashed or once that error code kicks in a new conductor plate is a must? No error codes come up anymore. and the P0715 was the result of a slipping trans.
thanks

What model car is this?

OK, sorry, 2003 E55 W211.

Finally some consistency. Car is now pushing out P2502 and P2503 codes on the trans module. Seems to now slip in 1st before jumping into 2nd them limp mode.

Does anyone know of the SDN (?) needs to be done to get it to work properly or perhaps I have a bad torque converter? Does not seem like the conductor plate is at fault here. I read I can have someone lock it out with the Star program to test the TC????????? Thanks

Check and see if the transmission ECU is full of ATF.

Yeah, I checked it out, bone dry. Read some post on that problem.

Still leaning to a bad torque converter rebuild.

As MBDOC said, the P0715 code usually means a bad speed sensor which is an integral part of the conductor plate above the valve body. It's about a $170 DIY part plus fluids and gaskets and you need to reset the ETC codes with a Star Diagnose System or equivalent to get the trans out of limp home mode. An OBD-II scanner can't do that level of reset.

I've seen this statement by many posters over the years. For the sake of accuracy, and without ruffling any feathers, I'd like to explain how it really is.

The transmission will come out of limp mode as soon as the condition that caused it is rectified (e.g. conductor plate replacement due to faulty speed sensor). The presence of stored fault codes will not affect operation. Current faults are a different story. :)

I'll defer to ILUVMILS experience, and no feathers are ruffled! Thanks for the clarification. -Reid

P0715 Speed Sensor Code
 

Hi Gang,
I know this thread is pretty old and if I don't get any answers if I'll start a new one - not sure what the etiquette is....
Anyway, I am getting a P0715 code and have a new Conductor plate and from this code it appears I need to replace a Speed Sensor. I have a Febi PDF (Attchd) telling about replacing the conductor plate and everything is straightforward except it shows 2 Speed Sensors (N2 & N3). Is there anyway to know which is bad or should I just replace both?
I should probably buy both - but Pelican doesn't seem to have these Sensors in Stock. Dealer Only?

You have a 722.6? The P0715 is a generic something is wrong with your transmission code. You need to scan the TCM with a mercedes specific scan tool.

Clearing a P0715 Code
 

Thx - Yep, it's a 722.6 AT. I'll guess I'll have to find a MB Specific tool...

P0715 is a speed sensor code. N2 and n3 speed sensors are in the conductor plate, not available separately. No need to buy anything else.

Except he already installed a new conductor plate. P0715 pops up in the Mercedes ECU any time the 722.6 misbehaves. It could be a bad speed sensor in the brand new conductor plate, it could be no communication with the TCM, it could be oil in the wiring harness. Mine gave P0715 because the TCM was full of ATF that had wicked up throgh the wiring harness. You can't just go by the generic OBD2 codes you find online.

https://youtu.be/SXU7-M1k_fk

Most likely a conductor plate problem with P715. Easy to change out if you are good in diy. A 7 out 10 difficulty job. No special tools needed. The connector is full of ATF and it affects the sensor readings. Probably nothing wrong with sensor.

Perfect! I have a new Conductor Plate & AT Filter Kit so I should be back on the road soon. You have been very helpful! Thanks so much...

I replaced the CP and still have a P0715 - I hear a bad TCM/TCU could be the cause, if I can locate it on the car I will write down the part # - can someone explain where to find it?

P0715 and the 722.6 Transmission
 

Hello - I hope you can provide some guidance; your credentials are certainly extensive! I replaced the Conductor Plate and the Transmission still will not upshift from a low speed start. I bought an Innova Code Reader which works great at detecting the problems in my '06 E350AWD. After the Auto Trans Service, I cleared the codes with my Innova Code Reader. It cleared it but the error came right back. I spoke to my local dealer, but they said they don't work on Auto Transmissions from the 2006 time frame; if they get a problem, they just replace them at an estimated approx. cost of $8000...

A local Indy who works on our Ford recently bought a $13000 engine analyzing machine (per the front clerk) - What specs should I ask about if I check with him to see if his machine will read & clear the MB AT Codes?

BTW - I have seen comments about clearing the codes and some state the code will clear itself when the problem is repaired, while others say the only way to clear the Error Code is to use the MB Star System, leaving me (and I suspect others), very confused and frustated.

Finally the TCM is supposed to be in the Passenger Foot well. I pulled the cover but only found a courtesy light - Any other places to look (and what does it look like) ?

Thanks!