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Author Topic: P0602/P1681 Control Module Programming Not Finished - Workaround for ME7.1.1/7.5  (Read 57282 times)
guy1195
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2021 and this post is still helping people out.

8E0909518AS Audi a4 2004 bex 1.8t 190hp 6 speed manual quattro, attempted to read ecu flash and this code appeared and would no longer start.

Read ecu flash via galletto and ftdi cable, made this change using hextor as TunerPro doesnt allow wildcard ?? searches in hex.

Please see post for full info and steps taken on page 2:
http://nefariousmotorsports.com/forum/index.php?topic=19962.msg148718#msg148718
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markhodges78
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Ok so I had to replace my ecu and I replaced it with an ecu with the same numbers
MY ECU 4Z7907551R ME7.1.1 0003
EBAY ECU 4Z7907551R ME7.1.1 0003
I done a full backup of new ecu with ktag which katag does not read the eeprom so I also saved a copy with ME7eeprom.exe then I did a full restore with ktag of original ecu backup then I did a restore of original eeprom bin with ME7eeprom.exe. After that I wanted to do a read with nefmoto just because lol... well after i did the read and saved file but ecu in car and no start.. checked codes and yup P1681 I tried doing the read the ecu writing back to ecu with nefmoto and ktag and none of that worked. The one thing that did take care of the issue was to write the eeprom bin back to the ecu with  ME7eeprom.exe turn car of then back on and start code gone...

now after all that im wondering if I should have not done anything to replacement ecu except write eeprom and go
also it seems the new ecu had a tune because in eepromtool.exe the bin for the new ecu says
Tuner Tag:  ←Cx |
« Last Edit: January 15, 2022, 01:45:55 PM by markhodges78 » Logged
EuroXs4
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I am running into this same issue. Programming not finished P1681 008. Any idea how to fix? I can clear that fault and rewrite the flash but everytime I cycle the key this fault comes back. Any ideas? 4D0907560DD Me7.1.1 vw phaeton ecu.
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_nameless
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I am running into this same issue. Programming not finished P1681 008. Any idea how to fix? I can clear that fault and rewrite the flash but everytime I cycle the key this fault comes back. Any ideas? 4D0907560DD Me7.1.1 vw phaeton ecu.

Its the first post in this thread...

Here's the fix.

Open your file in a hex editor and find the follwing string:

"DB 00 28 02 84 00 ?? ?? C2 F4 ?? ?? 66 F4 80 00 2D"

After finding this, change the last byte from 2D to 0D

Example:

Before:
F4   80   00   2D   0D   E6   F4   F0   A5

After:
F4   80   00   0D   0D   E6   F4   F0   A5
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EuroXs4
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Yes I read that and tried doing that yet the fault remains. Perhaps its because I don't have an exact match but this is the closest thing in the flash file :

DB 00 28 02 84 00 A6 B6 C2 F4 80 86 66 F4 20 00 2D this is located at 797C0 however I don't think its correct as changing this value changed my checksum values and it bricks the ecm and I need to read it in bootmode again to reflash. So perhaps I am looking for something else. Attached is my flash file for the ecu 4D0907 560DD me7.1.1.

« Last Edit: June 25, 2023, 07:39:29 PM by EuroXs4 » Logged
EuroXs4
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Ok I think I may have found my mistake. I found a match at the very end of the flash. That was my issue I was modifying elsewhere. Thanks again.

In my case it was located at 0x00088220 thru 88230. I was editing in the wrong spot earlier which would explain all the issues I was having.
« Last Edit: June 25, 2023, 08:28:12 PM by EuroXs4 » Logged
_nameless
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Yes I read that and tried doing that yet the fault remains. Perhaps its because I don't have an exact match but this is the closest thing in the flash file :

DB 00 28 02 84 00 A6 B6 C2 F4 80 86 66 F4 20 00 2D this is located at 797C0 however I don't think its correct as changing this value changed my checksum values and it bricks the ecm and I need to read it in bootmode again to reflash. So perhaps I am looking for something else. Attached is my flash file for the ecu 4D0907 560DD me7.1.1.


Found in 2 seconds. Use the tools in ols it makes your life easy
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EuroXs4
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Yes I was using a generic hex editor took forever to find lol. But got it sorted out thank you for confirming.
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andrey_brest
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VW Caravelle 2.0 AXA MT
ME7.1.1
P1681 Control Module Programming Not Finished
ME7.1.1 0261S05220 06A906012AC 7280 509723
fix "DB 00 28 02 84 00 ?? ?? C2 F4 ?? ?? 66 F4 80 00 2D" - not found

How to fix flash?
« Last Edit: August 08, 2023, 05:09:19 AM by andrey_brest » Logged
_nameless
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VW Caravelle 2.0 AXA MT
ME7.1.1
P1681 Control Module Programming Not Finished
ME7.1.1 0261S05220 06A906012AC 7280 509723
fix "DB 00 28 02 84 00 ?? ?? C2 F4 ?? ?? 66 F4 80 00 2D" - not found

Ok and?
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andrey_brest
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How to fix flash?
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_nameless
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How to fix flash?
The string is a few bits off, however it was still easy to find...
File attached
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