722.6 Transmission Error Codes 034 and 130 ? - Mercedes-Benz Forum

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Old 09-11-2010, 07:08 PM   #1 (permalink)
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722.6 Transmission Error Codes 034 and 130 ?

Hello, I'm a new member on this site. Monitoring and reading all related info to 722.6 transmission problems and other common issues with E320 Models.
I have a 2001 E320 with ‘hard limp mode’ problem. I run the diagnostic scan through the 38 pin connector. The Code I get is 034 and 130 Communication with DME disturbed. Checked the CAN signal line with Oscilloscope. The CAN bus signal is within spec. The Conductor Plate connector had minor leakage, cleaned with contact spray and temporary reconnected until the new part arrives. The Gear shifter did not get flooded, I did inspect the electronic had only minor dust on it, but no traces of liquid.
Short History:
The car is at 155000 Miles with mostly long distance HW driving. At 140000 Miles, the problem started with ‘Soft Limp Mode’ when the accelerator was pushed hard. The engine light was set and the error code was usual related to cylinder miss firing. Some cases the engine light self reset, other times would not clear and I have to reset. The ‘Soft Limp Mode’ cleared with restarting the engine.
I assumed that this was due to the rattling CAT. CAT and MAF were replaced and the ‘Soft Limp Mode’ disappeared. Reading the Forum about the ‘sealed for life transmission’ I realized that the car is far over due for transmission fluid change. I Changed the fluid and filter with Mercedes spec AT fluid (for the 7 speed AT), and also did a full flash. I checked the level at 80C. The old fluid was OK, not burned and no residue in the pan. The ‘hard limp mode’ happened 1000 – 1500 Miles after transmission flush, when I stopped at the intersection.
What DME stands for?
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Old 09-11-2010, 08:45 PM   #2 (permalink)
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I expect more experienced minds than I will reply on your specifics on your diagnostic, however, it may be in part you need to have the "hard" code erased.

Why did you choose the "new" tranny fluid for the 7speed, rather than the recommended 722.6 fluid ? Yes - supposedly it is "spec'd" to be backwards compatible, but all the MB techs I respect "highly" recommend NOT using the "new" fluid in our trannys, they have personally seen problems with abiding with that "backwards compatible" spec.

Did you replace the tranny connector with the updated connector as well ?

Inquiring minds want to know - keep the beat !
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Old 09-11-2010, 08:52 PM   #3 (permalink)
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DME

is ECU digital motorishe electroniche or something like that
They just like to confusticate you at times
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Old 09-12-2010, 06:43 AM   #4 (permalink)
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Quote:
Originally Posted by PMat View Post
Hello, I'm a new member on this site. Monitoring and reading all related info to 722.6 transmission problems and other common issues with E320 Models.
I have a 2001 E320 with ‘hard limp mode’ problem. I run the diagnostic scan through the 38 pin connector. The Code I get is 034 and 130 Communication with DME disturbed. Checked the CAN signal line with Oscilloscope. The CAN bus signal is within spec. The Conductor Plate connector had minor leakage, cleaned with contact spray and temporary reconnected until the new part arrives. The Gear shifter did not get flooded, I did inspect the electronic had only minor dust on it, but no traces of liquid.
Short History:
The car is at 155000 Miles with mostly long distance HW driving. At 140000 Miles, the problem started with ‘Soft Limp Mode’ when the accelerator was pushed hard. The engine light was set and the error code was usual related to cylinder miss firing. Some cases the engine light self reset, other times would not clear and I have to reset. The ‘Soft Limp Mode’ cleared with restarting the engine.
I assumed that this was due to the rattling CAT. CAT and MAF were replaced and the ‘Soft Limp Mode’ disappeared. Reading the Forum about the ‘sealed for life transmission’ I realized that the car is far over due for transmission fluid change. I Changed the fluid and filter with Mercedes spec AT fluid (for the 7 speed AT), and also did a full flash. I checked the level at 80C. The old fluid was OK, not burned and no residue in the pan. The ‘hard limp mode’ happened 1000 – 1500 Miles after transmission flush, when I stopped at the intersection.
What DME stands for?
What have you used to retrieve those codes? DME is term from BMW field.

Code 034/130 is for CAN communication with electronic shifter module (ESM).

.
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722.6 Transmission Error Codes 034 and 130 ?-034_130.jpg  
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Old 09-12-2010, 08:27 AM   #5 (permalink)
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Thanks for the inputs. I used CarSoft 'clone' multplexing scanner for Mercedes models. It does work on my 2000 S430 with OBD II and also on the 2001 E320 with 38 Pin connector.
The code 034 and 130 will not reset, I tried throgh the multiplexer and also direct with 3 leads CAN signal connected to pin No. 10. The result was the same; not resetting the 034 and 130 error code. I know that the most common problem is the gear-shifter, but this code is more general not specific to the gear-shifter.
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Old 09-12-2010, 08:29 AM   #6 (permalink)
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Nothing spilled around your shifter right? I was receiving a similar code just after changing my transmission fluid as well. I spent forever working on the issue because I thought my issues were related to changing my fluid. My problems actually stemmed from the fact that my battery had died and I started the car with jumper cables connected which I guess has a tendency to fry the transmission computer. I actually had to replace the tranny computer then take it in to a dealership and have them sync the new computer to my car before it would shift again. Anyway it was a very lengthy process and I found out quite a bit along the way. One thing to check is apparently it is very common for the conductor plate to fail after a fluid change. There is an exclusive MB indy in SLC and he says that he sees it all the time. Dealership told me the same thing. I notice you talk about checking your shifter for fluid, but did you check the tranny computer itself? several people with similar issues to yours have pulled the tranny computer and it was full of fluid and had to be cleaned or in some situations replaced.
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Old 09-12-2010, 08:45 AM   #7 (permalink)
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I posted screen shot from manual. How specific you need to get?

Can you communicate with ESM? Does instrument cluster display jive with actual shifter position? Have you checked ETC module for fluid?
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Old 09-12-2010, 08:46 AM   #8 (permalink)
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Thanks again, nothing spilled in the gear shifter and the 'tranny computer ' has no fluid in it. My car did not get jumper started. This does not mean that one of the component in the transmission electronic not dead; I just don't see the specific error codes for specific components, and starting to replace one by-one is an expensive alternative.
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Old 09-12-2010, 09:01 AM   #9 (permalink)
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Well, below is complete list of transmission DTC's. I am not suggesting that shifter is bad but that transmission module does not get data from it. Hence my question about instrument cluster display.
Attached Files
File Type: pdf etc_codes.pdf (48.9 KB, 759 views)
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Old 09-12-2010, 09:33 AM   #10 (permalink)
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Thanks Whitek M for the codes table. The display does not show any gear selected.

Here is the diagnostic result:

CARSOFT Diagnosis-report 22.08.2010 Vehicle type: E320 License plate: Customer:
Single diagnosis ME - Status: OK !
Single diagnosis Traction - Status: OK !
Single diagnosis AIRBAG - Status: OK !
Single diagnosis Inst. Cluster - Status: OK !
Single diagnosis EGS - Status: ERROR !
034 Communication with DME disturbed
130 Communication with DME disturbed
Single diagnosis AIRCO - Status: OK !
Single diagnosis PSE - Status: OK !
Single diagnosis PTS - Status: OK !
SAM Single Diagnosis SAM - Status: OK !
HRA Single Diagnosis HRA - Status: ERROR !
Single Diagnosis OCP - Status: OK !
Single Diagnosis LCP - Status: OK !
Single Diagnosis D2B - Status: ERROR ! B1241
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