March 05, 2026
AutoTuner Audi A8 EDC17CP44 Failed to Write ECU via OBD Solution
Problem:
It’s an Audi A8 4.2 TDI 2014 with Bosch EDC17CP44 ECU. Tried writing 3 times withAutotunervia OBD but had same error every time. This vehicle has two ECU’s.
First said "Could not start transfer: 34 22”. Eventually said "This is neither a valid tuning nor a recovery file for the selected ECU”.
How to fix it?
Solution:
This ECU software ID is 0008.
0008 got new bootloader,there is a bug patching it in obd write, other tools too!
0008 software has a patch that blocks writing/flashing via OBD.
You can use bench, do manual bootloader patch. Bench this ecu, I’ve had this issue with kess3 everytime, on the 3.0 tdi, its the same ECU EDC17CP44.
Optionally, you candowngrade the software to 0005/0003 via OBD, and then everything works over OBD as well.
Posted by: jean at
07:45 AM
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