Audi A3 CBAB Regeneration

All about how to remove FAP and DPF filters

Audi A3 CBAB Regeneration

Postby kupacsi » Sat Jan 09, 2021 9:29 pm

Hi!

Your help, please. There is an audi a3 CBAB 140hp. It regenerates many times, it does not have a DPF filter. The ECU was a mechanical tprot. I read KTAG with DPF off and stage 1. Regeneration was not resolved. The situation is interesting. I couldn't find a Ktag flash file just a kess file. I compared it and the same, except for what I didn’t know because Kess misses it when I read. This is a used car, the DPF filter was not included, yet there was no error code !! You could help with an original Ktag file or a tried DPF off. I attach the original.
Many thanks
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Re: Audi A3 CBAB Regeneration

Postby Tune4Fun » Sun Jan 10, 2021 3:54 am

Think you haven't done DPF off correctly and need to remove error code too...
Not sure about your explanation on the files..
KTag can read separately, BDM, is that what you ment?
You can reflash the backup file if you think something is wrong... Or find correct file for this ECU without DPF.

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Re: Audi A3 CBAB Regeneration

Postby Lambda1 » Sun Jan 10, 2021 10:58 am

DPF delete wrong - I sent you the correct one in PN.

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Re: Audi A3 CBAB Regeneration

Postby kupacsi » Sun Jan 10, 2021 12:42 pm

thank you very much. I'll try

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Re: Audi A3 CBAB Regeneration

Postby kupacsi » Sun Jan 10, 2021 3:05 pm

Hello! I tried it. When the car warms up, it begins to regenerate at idle. Increases idle speed to 1033 rpm. Exhaust gas is not hot. I think someone started a standing regeneration. If I think about the reg. time, soot content, etc. , stored in the eeprom. I don't know but I reset dpf, read it back and the map file didn't change.

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Re: Audi A3 CBAB Regeneration

Postby Lambda1 » Sun Jan 10, 2021 4:04 pm

Did you clear regeneration (reset em) as I mentioned? Which tool? What values VCDS ? shows you ?
I done DPF off by switch... and all the stuff, so bit confused I shouldnt work.

Any dtc?
Any sensor disconnected?

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Re: Audi A3 CBAB Regeneration

Postby kupacsi » Mon Jan 11, 2021 11:37 pm

Hello!

I'm sure you did a good job. I used VCDS in previous trials. Was not good. Now I used Delphi. Delphi writed me 0ml or mg I forget.
That's why I wrote here. I did everything you said. No DTC.
I couldn't check all the sensors.
I thought the minimum coolant temperature should be adjusted. For example, 120 ° C. I don't know which bit !!
It only begins to regenerate at idle. Someone I think started forced regeneration.
I'm trying to find damos.

I want to thank you again for your help !!!!!!!
Thanks

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Re: Audi A3 CBAB Regeneration

Postby AGDiag » Wed Jan 13, 2021 10:21 pm

maybe there is another problem? have you tried to read live data after the car worms up and see if the regeneration is active? if the rpm raises up to aprox. 1000rpm doesn't necessarily mean it's regenerating

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