Disable errors in the file EDC16. Decision 1/0

by **chli1976** » Sun Feb 03, 2013 6:15 pm

I found the DTC tabels on EDC16, but i will understand how i can find the right byte/bytes for disable the error.

I have flashed my TEST EDC16 over 130 times for finding a little bit errors. But i don`t know how i can find the right byte without trying a lot of bytes set to zero.

I have cleared on EDC16 the V157 error but with some luck

Sorry for my english

by **Foblas** » Wed Feb 13, 2013 1:43 pm

On other forum i found this formula

How to locate the value to disable a DTC:
1) Find the DTC you want to disable in the DTC table. The DTC is the Pxxxx value, and it is stored in hexadecimal, since all Pxxxx codes are actually already in hexadecimal.
2) Get the address of the DTC block: (address of the first of the four DTCs in the group).
3) Compute the DTC index: (address of DTC block - address of DTC table) / 8.
4) Find the value containing the DTC error code class for the DTC index: (DTC error code class table address + DTC index).
5) Set the value containing DTC error code class to zero to prevent the DTC from being stored.

there is information that the formula is applicable to all bosch ecus.
Can anyone who habe solution confirm or deny this info?

chli1976 can you please share some more information about you experiment?

Thanks

by **ingus** » Wed Feb 13, 2013 9:44 pm

Formula is simple;)
Find address of dtc Pxxxx code in dtc class table, substract the beginning of dtc class table and divide by 8. Result is index number.
Then find the beginning of dtc switch table (view in 8 bit mode now) and add index number. The result address is dtc switch. Zero this ;)
In EDC16 VAG ECU's those tables are very easy to find when looking in 2D mode ;)

by **chli1976** » Sun Feb 17, 2013 6:54 pm

Can anyone tell me the adress for beginning of dtc class table and the adress for beginning of dtc switch table for this three files. I am not 100% sure if i have found the right one

EDC16.zip

I have made a exel file with formula, for finding DTC switch from error code, and error code from switch. But on some errors the adress is not right, when i will find error code from switch

by **alvarezpic** » Tue Feb 19, 2013 11:47 am

by **hysterius** » Tue Feb 26, 2013 12:13 am

I heard , even you set the fault class to zero sometimes the limpmode comes also but without DTC into the ecu !?

Can this be true ?

by **RPM freak** » Tue Feb 26, 2013 1:11 am

hysterius wrote:I heard , even you set the fault class to zero sometimes the limpmode comes also but without DTC into the ecu !?

Can this be true ?

Yes

You will get Unknown DTC when you scan the ECU for errors.

by **deniss0** » Wed Mar 06, 2013 12:09 am

RPM freak wrote:
hysterius wrote:I heard , even you set the fault class to zero sometimes the limpmode comes also but without DTC into the ecu !?

Can this be true ?

Yes

You will get Unknown DTC when you scan the ECU for errors.

exactly

Did somebody found DTC table in form such as Pxxxx in hex?

by **deniss0** » Wed Mar 06, 2013 8:33 am

Some files use dtc in decimal as per vcds codes (16497, 16496 etc)
Some files use dtc in hex as per P-tsodes
But I have not seen edc16 files with dtc table in hex Pxxxx form.
Does anyone have these files?
or incorrect information here...

by **donkey** » Sun Mar 10, 2013 6:26 pm

deniss0 wrote:Some files use dtc in decimal as per vcds codes (16497, 16496 etc)
Some files use dtc in hex as per P-tsodes
But I have not seen edc16 files with dtc table in hex Pxxxx form.
Does anyone have these files?
or incorrect information here...

When you search for VAG codes they are xxxxx in decimal mode with the p codes often mixed in amongst them. The p codes show as xxxx in hex view. You never see a letter.