How to find which error class corresponds to a DTC read by OBD

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Topic: How to find which error class corresponds to a DTC read by OBD (Read 197270 times)

doncas333

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	Re: How locate the values to disable DTCs « Reply #30 on: December 06, 2011, 02:02:35 PM »

Hello, who can answer, how to disable dtc p3135 on EDC16 (Audi A6 2.7 TDI)
What addresses are:
DTC Error Code Class Table (8 bit table)
DTC Manufacturer P-codes (16 bits values)

Thanks


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SundayNightDriver

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	Re: How locate the values to disable DTCs « Reply #31 on: January 02, 2012, 09:01:07 AM »

I've come across several EEPROM dumps for ME7s that supposedly disable all DTCs, I think one of them was even posted on this forum. Between 0x100 and 1DF, all bits are set in it.
Does anyone know more about this? The ME7.1 from my A8 has most bits there set to 0, so maybe it's a mask for disabling DTC classes?


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b00mtings

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	Re: How locate the values to disable DTCs « Reply #32 on: January 11, 2012, 06:43:23 AM »

"DTC Error Code Class Table:
DTC error code class table is at address 0x8106AD, in blocks of one byte. (if error class is zero, DTC is not stored)".

Does anyone know how was the address for the class table identified , or can this only be found by reversing the software?


« Last Edit: January 11, 2012, 09:10:58 AM by b00mtings »	Logged

masterj

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	Re: How locate the values to disable DTCs « Reply #33 on: January 11, 2012, 09:54:45 AM »

Quote from: b00mtings on January 11, 2012, 06:43:23 AM

There should be few zeros in from of table. Table mostly consists of 00s and 03s and 13s


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ME7Tuner Wizard

b00mtings

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	Re: How locate the values to disable DTCs « Reply #34 on: January 11, 2012, 12:18:27 PM »

Quote from: masterj on January 11, 2012, 09:54:45 AM

There should be few zeros in from of table. Table mostly consists of 00s and 03s and 13s

Thanks for the answer,

Whilst working through this information I also noticed that in the DTC block some sequential entries are the same ( like for p1114) and for others ive seen values such as 73 11 72 11 72 11 71 11 (byte offset 12D9C).

If i was to switch the later DTC off then would it effect the following

P1171
Throttle Actuation Potentiometer Sign.2 Range/Performance
P1172
Throttle Actuation Potentiometer Sign.2 Signal too Low
P1173
Throttle Actuation Potentiometer Sign.2 Signal too High

I assume these are all the codes for the Throttle Actuation Potentiometer and by grouping them together it makes it simple to switch on or off the DTC monitoring.

Likewise at offset 12DDC are the sequences 6815 5815 6815 6815 6815 6815 6815 6815. I can only assume by disabling the first sequence two DTC`s are disabled and by disabling the second sequence only a single DTC is disabled.

P1568
Idle Speed Contr.Throttle Pos. mechanical Malfunction
P1558
Throttle Actuator Electrical Malfunction.

kind regards.


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20VTMK1

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	Re: How locate the values to disable DTCs « Reply #35 on: February 28, 2012, 07:43:05 AM »

Hi guys ,

Great post .

I have a m3.8.3 AGU in a mk1 golf . Obviously no airbags and abs. The ecu keeps throwing the "powertrain databus missing" for ABS and Airbags.

How can I turn this off or is there a resistor mod that can prevent these codes ?


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masterj

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	Re: How locate the values to disable DTCs « Reply #36 on: February 28, 2012, 08:49:02 AM »

Quote from: 20VTMK1 on February 28, 2012, 07:43:05 AM

What number Pxxx DTC is stored?


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ME7Tuner Wizard

20VTMK1

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	Re: How locate the values to disable DTCs « Reply #37 on: February 29, 2012, 01:28:21 PM »

Hi ,

Thanks for the reply

18044 - Powertrain Data Bus
P1636 - 35-00 - Missing Message from Airbag Controller

18259 - Powertrain Data Bus
P1851 - 35-10 - Missing Message from ABS Controller - Intermittent


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20VTMK1

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	Re: How locate the values to disable DTCs « Reply #38 on: February 29, 2012, 10:07:26 PM »

Hi MasterJ ,

Thank you for that. Does Tony's expalation hold true for m 3.8.3 CJ version as well ?

Also , I dont have any doc's (dont have much - noob) that refers to the adress of CLACAIR .

Any further help will be appreciated , along with what you guys have posted already.


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kolbenmann

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	Re: How locate the values to disable DTCs « Reply #39 on: March 25, 2012, 09:46:54 PM »

Great info here!
I tried to find the code tables with the given address but it seems my ECU has different addresses than the ones posted here:

DTC Error Code Class Table (8 bit table) 0x106AD
DTC Manufacturer P-codes (16 bits values) 0x12CC4
DTC CARB P-codes (16 bits values) 0x1324C

How should I find the correct addresses for any specific ME7.5 bin file?

BTW the ECU I have is ME7.5 06A906032HP


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xxx8indxxx

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	Re: How locate the values to disable DTCs « Reply #40 on: April 02, 2012, 04:59:47 PM »

can anyone help me fine the location of p1198 and p1196 in this file ? i have a 5.9 aeb 8d0907558m ecu


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xxx8indxxx

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	Re: How locate the values to disable DTCs « Reply #41 on: April 03, 2012, 11:30:40 AM »

i am so lost on how search for the dtc and i get no numbers like this can anyone help me understand what i am doing wrong?


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herbon

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	Re: How locate the values to disable DTCs « Reply #42 on: May 27, 2012, 02:18:51 PM »

Sorry for revival the post but i have a dude. I dont know how to identifi de index of dtc tables. Who can help me¿


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gasa

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	Re: How locate the values to disable DTCs « Reply #43 on: June 03, 2012, 03:17:43 PM »

Hello,
is there anybody who can help with BMW?
I need to disable P0102 at Siemens ECU MSS54
at a M3 145 SMG.
I have no idea to locate the values.
Thanks in advance.
gasa


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smack

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	Re: How locate the values to disable DTCs « Reply #44 on: June 30, 2012, 09:31:25 PM »

Quote from: Goups on May 19, 2011, 12:43:09 AM

DTC Error Code Class Table (8 bit table)   0x106AD
DTC Manufacturer P-codes (16 bits values)   0x12CC4
DTC CARB P-codes (16 bits values)      0x1324C

Great information Tony and Goups. I understand everything except how you located these three tables. Apparently a lot of other people are uncertain about this too. Can anyone please shed some light?


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