[mike1]

Hello. Have got a Audi A6 C6 3.0tdi with ecu damage - internal module error and starts for a sec and dies.
Have got a donor ecu with the same numbers (4f0907401A/0281012153) - tried to transfer full data with Ktag clone - engine will not start after that (starter runs). No additional fault codes. Tried reverting back to the ecu original files - same result - will even not start for a sec. 

Ktag stated checksum error while reading ori backup file.

Anyone able to check/correct checksum for donor ecu? 

Regards

donor.rar
File Type:
Downloaded:	7 times
Size:	544.29 KB

ori.rar
File Type:
Downloaded:	8 times
Size:	544.44 KB

[Key1]

checksum already ok

[mike1]

Cheers. Looks like a faulty ecu then.

[Key1]

do you have same dtc with donor ecu?
check relay on the car

[mike1]

No fault with donor ecu.

[nemesis3290]

Now checksum are correct 
Greetings