Hi,

I have a 2002 6 speed allroad.  Since I have owned the car it has always been throwing a P0601 checksum error that keeps the CEL on.

After much reading online and this forum in particular I obtained a stock bin file for my ECU.    I ran a checksum on the file before flashing just in case but no errors were found,  once flashed
the P0601 was still present. 

At this point I figured I just have a bad ECU so I purchased a compatible ECU from a 2002 automatic allroad.    I built a bench flash rig, cloned the immoblizer, and reflashed the ECU with the stock bin file.
Once again I am still seeing a P0601 checksum error on this "new" ECU.   

At this point it seems hard to believe that both ECUs are bad.    The car runs fine with both ECUs,  the CEL comes on after a few starts and stays on until the clear the code (it doesn't really clear its always present).

Has anyone else seen such a problem?   Attached is the bin file I have been using along with the stripped txt file containing the nefmoto logs.  (only contains the logs from the flash session).

Any insight would be appreciated.

Thanks.


http://www.filedropper.com/nefmotolog
http://www.filedropper.com/4z7907551l

Thanks I did some more reading on "death code" and I just ran 95040sum.exe against my original EEPROM bin, it found an error and corrected it.

I am going to flash this new file tonight and see what happens.

I also read through the following post and looked at a pic that describes a couple of fields showing anything other than 0 will cause the P0601.

I opened my file with a hex editor and mine already shows 0's

Maybe I am missing something.

http://nefariousmotorsports.com/forum/index.php?topic=2973.15

Both are attached.   The EEPROM is from before I ran a checksum on it.

See how it says REVO in your eeprom? That's your problem. Either the ecu WAS Revo, or currently is. These files will fix your problem.

I edited my post to include the repaired file. Use both of them on your ecu and there should be no issues.

Thanks for the help.   Can you enlighten me on what you did to the files?

I copied your vin and immo id, as well as logins and lock codes into a new eeprom and checksummed it. Then I just uploaded that, and a stock 551L file for you.