Audi A3 1.6CR tdi DPF regeneration problem

[AudiChris]

Hi.

My 2010 Audi A3 1.6 Cr Tdi has the Dpf warning light showing on my dash, and has since gone into limp mode.
I have read the WIKI page for Dpf regeneration for my model and got all the prerequisites to start a 'service regeneration of the particle filter' in 04 basic settings.
When I press [Go!] it comes up with 'FINISHED CORRECTLY - NO DISPLAY'.

The Ash volume is showing as 35.6g and Soot Mass as 24.9g in SHOW MEASURED DATA.

Is my only option to ' Emergency Regeneration whilst Driving' in Adaptation ?? and will it be safe with these values ??



Autoscan Log -

Tuesday,07,May,2019,08:48:22:09880
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 18.9.1.0 (x64)  HEX-V2 CB: 0.4437.4
Data version: 20190114 DS296.0
www.Ross-Tech.com


VIN: TRUZZZ8PXA1010894   License Plate: 


Chassis Type: 8P-AU35 (1K0)
Scan: 01 03 08 09 10 15 16 17 19 25 26 42 44 46 47 52 56 61 62 72
          77

VIN: TRUZZZ8PXA1010894   Mileage: 116480km-72377miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
10-Park/Steer Assist -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
26-Auto Roof -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
56-Radio -- Status: Malfunction 0010
61-Battery Regul. -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
77-Telephone -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (J623-CAYC)       Labels:. 03L-906-023-CAY.clb
   Part No SW: 03L 906 023 M    HW: 03L 906 023 L
   Component: 1,6l R4 CR td H23 8790  
   Revision: --H23---    Serial number: AUX7Z0J3FN8010
   Coding: 00114036030501080000
   Shop #: WSC 01236 785 00200
   ASAM Dataset: EV_ECM16TDI02103L906023M 003009
   ROD: EV_ECM16TDI02103L997557R.rod
   VCID: 303911DD7AA13A072ED-8064

1 Fault Found:
16848 - Diesel Particulate Filter 
          P2458 00 [173] - Regeneration Duration
          MIL ON - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 116467 km
                    Date: 2019.05.06
                    Time: 12:35:45

                    Engine speed: 783.00 /min
                    Normed load value: 19.6 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 82 °C
                    Intake air temperature: 28 °C
                    Ambient air pressure: 1010 mbar
                    Voltage terminal 30: 14.795 V
                    Unlearning counter according OBD: 40
                    Particle filter: soot mass measured-MASS_SOOT_PHY_PF: -5.48 g
                    Particle filter: soot mass calculated-MASS_SOOT_SIM_PF: 9.62 g
                    Particle filter kilometers since last regeneration_1-DIST_RGN_ENVD_H: 554 km
                    Counter for regeneration time of diesel particle filter-T_INT_RGN_ACT_INI_PF_ENVD_H: 12596.0189 s
                    Particle filter: difference pressure-DIP_PF: 0.00 hPa
                    Particle filter: offset for differential press.-DIP_PF_AD[0]: 1.41 hPa
                    Service regeneration: Release conditions 3-FRF_STATE_RGN: 9

Readiness: 1110 1000

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 1K0-907-379-60EC1F.clb
   Part No SW: 1K0 907 379 AJ    HW: 1K0 907 379 AJ
   Component: ESP MK60EC1   H30 0107  
   Revision: 00H30001    
   Coding: 13422012092300FAC81304ED901D0091380800
   Shop #: WSC 01236 758 00200
   VCID: 7AADF3F5ECDD3057D09-802E

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 8P0-820-043.lbl
   Part No SW: 8P0 820 043 BM    HW: 8P0 820 043 BM
   Component: KlimavollautomatH09 0150  
   Revision: 000356      Serial number: 8P0820043BM   
   Shop #: WSC 00000 000 00000
   VCID: 78A9E9FDDED12247A6D-802C

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 8P0-907-063.clb
   Part No SW: 8P0 907 063 A    HW: 8P0 907 063 A
   Component: BCM PQ35  M   105 0575  
   Revision: 00105 AK    
   Coding: 0E000A0FB205F140207060E02000014C531A5CAA0100C12AE4008F000055
   Shop #: WSC 01236 758 00200
   VCID: 323D1BD5742D0817589-8066

   Subsystem 1 - Part No SW: 8P2 955 119 F    HW: 8P2 955 119 F  Labels: 1KX-955-119.CLB
   Component: Wischer AU350  H10 0040 
   Coding: 00DD13

   Subsystem 2 - Part No: 8P7 951 177 
   Component: DWA-Sensor H0  H03 0040 

   Subsystem 3 - Part No: 1K0 951 605 C
   Component: LIN BACKUP HO  H05 1501 

No fault code found.

-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J446)       Labels:. 8P0-919-475-7X1.clb
   Part No SW: 8P0 919 475 G    HW: 8P0 919 475 
   Component: PARKHILFE 4K  H06 0120  
   Revision: 11001001    Serial number: 93641009706782
   Coding: 000001
   Shop #: WSC 01236 758 00200
   VCID: 42DD4B15C48DB897C89-8016

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 8P7-959-655.clb
   Part No SW: 8P7 959 655     HW: 8P7 959 655 
   Component: SR Airbag 9.43  H01 0020  
   Revision: 93H01002    Serial number: 003BS000ZJ0A  
   Coding: 0021330
   Shop #: WSC 01236 785 00200
   VCID: 06559705A42544B7A41-8052

   Subsystem 1 - Serial number: 6332DRB409D18697-

   Subsystem 2 - Serial number: 6342DRB409D0C726X

   Subsystem 3 - Serial number: 63747RB40583A94DZ

   Subsystem 4 - Serial number: 63847RB40583C919V

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 8P0-953-549.lbl
   Part No SW: 8P0 953 549 K    HW: 8P0 953 549 K
   Component: J0527           H37 0070  
   Coding: 0003011
   Shop #: WSC 01236 785 00200
   VCID: 46D55705E4A584B7E41-8012

   Subsystem 1 - Part No: XXXXXXXXXXX 
   Component: E0221           H04 0100

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 8P0-920-xxx-17-MY8.clb
   Part No SW: 8P0 920 982 J    HW: 8P0 920 982 J
   Component: KOMBIINSTR. VDO H03 0990  
   Revision: D0H03005    Serial number: 2243J005023206
   Coding: 0004428
   Shop #: WSC 12345 123 12345
   VCID: 40D9411DC681AA87DED-8014

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels:. 1K0-907-530-V4.clb
   Part No SW: 1K0 907 530 AF    HW: 1K0 907 951 
   Component: J533  Gateway   H17 0233  
   Revision:   H17       Serial number: 1521J104130013
   Coding: E9A07F26100602049101
   Shop #: WSC 01236 785 00200
   VCID: 6B83C6B19F8799DF5BF-803E

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer        Labels: 1K0-920-xxx-25.clb
   Part No SW: 8P0 920 982 J    HW: 8P0 920 982 J
   Component: KOMBIINSTR. VDO H03 0990  
   Revision: D0H03005    Serial number: AUX7Z0J3FN8010
   Shop #: WSC 01236 210 01865
   VCID: 40D9411DC681AA87DED-8014

No fault code found.

-------------------------------------------------------------------------------
Address 26: Auto Roof        Labels: Redir Fail!
   Part No: 8P7 959 255 B
   Component: VSG AUDI A3     H14 0130  
   Shop #: WSC 00000 000 00000
   VCID: 44D14D0DD299B6A7FA5-8010

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver        Labels: 8P0-959-801-MIN3.lbl
   Part No SW: 8P7 959 801 E    HW: 8P7 959 801 E
   Component: Tuer-SG         H04 0102  
   Coding: 0131836
   Shop #: WSC 01236 785 00200
   VCID: 44D14D0DD299B6A7FA5-8010

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
   Part No: 1K0 909 144 J
   Component: EPS_ZFLS Kl. 233    3001  
   Revision: 00H17000    
   Shop #: WSC 01236 785 00200
   VCID: 313F14D97D2B330F213-8064

No fault code found.

-------------------------------------------------------------------------------
Address 47: Sound System        Labels: 8Px-035-382.lbl
   Part No SW: 8P7 035 382 C    HW: 8P7 035 382 C
   Component: AB2 SUBWOOFERBOXH04 0160  
   Revision: 00003       Serial number: 92159949695479
   Shop #: WSC 00000 000 00000
   VCID: 372B2AC1934FED3F6F7-8062

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass.        Labels: None
   Part No SW: 8P7 959 802 E    HW: 8P7 959 802 E
   Component: Tuer-SG         H04 0102  
   Coding: 0131836
   Shop #: WSC 01236 785 00200
   VCID: 45D75009D9A38FAFEDB-8010

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio        Labels: 8J0-035-1xx-56.clb
   Part No SW: 8P0 035 186 S    HW: 8P0 035 186 S
   Component: R Concert2+     H03 0280  
   Revision: 00H03000    Serial number: AUZ1Z3K6032531
   Coding: 0610311
   Shop #: WSC 00006 210 83400
   VCID: 42DD4B15C88DB897C89-8016

1 Fault Found:
01044 - Control Module Incorrectly Coded 
            000 -  - 
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 5
                    Fault Frequency: 1
                    Reset counter: 255
                    Time Indication: 15


-------------------------------------------------------------------------------
Address 61: Battery Regul. (J840)       Labels:. 1K0-907-534.clb
   Part No SW: 1K0 907 534     HW: 1K0 907 951 
   Component: Batt.regelung H17 0233  
   Revision: --------    Serial number: 1521J104130013
   Coding: 0303085A
   Shop #: WSC 01236 758 00200
   VCID: 6889B9BD8271B2C736D-803C

   Subsystem 1 - Part No SW: 1K0 915 181 E    HW: 1K0 915 181 A
   Component: J367-BDM  H07 0140 
   Serial number: 00000000005650166103

No fault code found.

-------------------------------------------------------------------------------
Address 62: Door, Rear Left        Labels:. 1K0-959-703-GEN3.clb
   Part No SW: 8P7 959 811 B    HW: 8P7 959 811 B
   Component: Tuer-SG         H01 0050  
   Coding: 0131216
   Shop #: WSC 01236 785 1012552
   VCID: 42DD4B15C88DB897C89-8016

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right        Labels:. 1K0-959-704-GEN3.clb
   Part No SW: 8P7 959 812 B    HW: 8P7 959 812 B
   Component: Tuer-SG         H01 0050  
   Coding: 0131216
   Shop #: WSC 01236 785 1012552
   VCID: 43D34E11D797B19FC3F-8016

No fault code found.

-------------------------------------------------------------------------------
Address 77: Telephone        Labels: 8P0-862-335.lbl
   Part No SW: 8P0 862 335 AA    HW: 8P0 862 335 S
   Component: FSE_256x BT     H38 0600  
   Revision: 00000000    Serial number: 00000005188620
   Coding: 0001202
   Shop #: WSC 01236 785 00200
   VCID: 75B7E0C9C9C35F2FBDB-8020

No fault code found.

End----(Elapsed Time: 01:30, VBatt start/end: 12.0V/12.0V. VIgn 12.0V)-----

Thanks,

Chris.

 

[AIB Wolfgang]

Hello
P2458 - Diesel particulate filter, Regeneration Duration

Diesel Particulate Filter will not be regenerated within a specified time
Possible causes:
- DPF ash charge too high
- Check exhaust gas temperature sensors, faulty measured values, for plausibility
- Engine trouble that prevents a high exhaust gas temperature, for example, sufficient air supply for regeneration
- Faulty measured values of the differential pressure sensor

 

[AudiChris]

Hi Wolfgang, thanks for the reply info.

Maybe I should give a background history of the car.
I have owned it since 2014 with 25,000 miles.
Until approx 6 months ago it was used nearly every day on a 50 mile round trip and only twice in that time did the DPF light come on.
Both times I took the car for a blast on a motorway and the fault always cleared.
Recently I have only used the car on short 5 minute journeys to work and back, which I know is BAD for a DPF as the regeneration cycle will always be interrupted, which has probably why I have error P2458
When the DPF light came on this time, the limp mode came on before I could get to a motorway to activate a regeneration.
I,m sure it just needs to go through a regen cycle, but just to make sure, what are the typical values I would see for exhaust gas temperatures and differential pressure sensor if they are working correctly ?

It's a bit ironic, as I work for a company that specializes in diesel emissions in the commercial sector

Thanks,

Chris

 

[Uwe]

Is my only option to ' Emergency Regeneration whilst Driving' in Adaptation ?? and will it be safe with these values ??

If it were mine, I would certainly try it.

But first, I would double-check the differential pressure sensor. Check values with key on, engine not running, and at idle.

-Uwe-

 

[AudiChris]

Hi Uwe. Thank you for your input.

The values I get for DPF Differential Pressures are-

0.04 hPa ( key on / engine not running )

4.5 hPa ( engine at idle - 750rpm )

Do the values look ok?

Thanks,

Chris.

 

[Uwe]

The values I get for DPF Differential Pressures are-
0.04 hPa ( key on / engine not running )
4.5 hPa ( engine at idle - 750rpm )
Do the values look ok?

Why the hell can't VAG stick with one unit? Had to look up hectopascals. OK, they're the same as millibars. Yes, those seem reasonably OK.

-Uwe-

 

[AudiChris]

OK.

So I have put the car into the ' regeneration whilst driving ' via adaptions, and taken it for a 30 minute run each way on the motorway sticking to the driving prerequisites.

It must have gone into regeneration mode as I had full power whilst doing the runs.

The DPF warning light is still on and is back in limp mode when I finished the run.

I monitored the exhaust temps, and soot values.

The temp values were around 250 - 300 during the run and up to 450 - 500 on hard acceleration . I would expect to see higher temps than this during a regeneration ?
The soot value has now gone from 25g before the run, up to 28g after the run.

I did another autoscan when I finished the motorway run and still have the same error code P2458.

Then I selected function 15 ( Readiness , and the box for Oxygen Sensors is marked as FAILED OR INCOMPLETE.

Could this be a faulty O2 sensor issue causing the error ?

 

[GXCars]

Hi Chris,

This may be your EGR playing up its very common on the 1.6 CR TDI

If youve had the EA189 recall done the whole emission system is covered by VW under warranty for 2 years after the recall has been done, a faulty EGR gives faulty 02 sensor readings and this may be the root of your issue

HTH

Ian

 

[AudiChris]

Hi Ian.

The EGR failed 2 years before the EA189 recall, so had the EGR delete of the ecu. It was the quickest and easiest option at the time, as I was working away and it was the wifes only transport.

I have opted not to have the recall performed as I was told it would include a software update of the ecu and would remove the EGR delete, and would either need another EGR delete or fitting a new EGR valve .

So, I cannot see the EGR being the problem.

I understand the O2 sensor is mainly used for maintaining the correct fuel to air ratio mixture, if it is faulty, it could be running too lean / rich and so not getting the correct exhaust temperatures to start a regeneration ??

Does the DPF regeneration use readings from the O2 sensor?

Thanks, Chris.

 

[GXCars]

Hi Chris,

My old 2010 caddy had the same EGR issue as you did and I did the very same thing having my tuner map out the EGR

What we noticed was that the van regenerated far more often and I was warned it would shorten the life of the DPF

Thee are 2 02 sensors either side of the DPF plus the lines for the pressure sensors, check the lines for the pressure sensors first as a leak will cause this issue and then check the data from both sensors

The only good thing it’s that the top o2 sensor is easily removed and you can get a DPF cleaning solution in there as it could just be completely clogged and finally it could be a faulty DPF pressure sensor

02 sensors are about £10;secondhand on eBay as are DPF pressure sensors if you wanted to do a process of elimination

Thanks

Ian

 

[AudiChris]

Hi Ian.

I already have a genuine pressure sensor on order from TPS, as this seems to be the commonest fault.

I will check the hoses / pipework to the pressure sensor for any damage or leaks and wiring to the other sensors first.

From my understanding there is only 1 O2 sensor ??, and 2 exhaust temp sensors ( 1 before and 1 after the DPF ), and 1 differential pressure sensor.

Chris.

 

[Jack@European_Parts]

Consider hose particulate filters for sensor protection if sensors are found faulty from FOD.

 

[GXCars]

You may be right Chris I quickly looked at the DPF diagram and it looked like a post DPF sensor but may be a temp sensor

I’ll have a look in Elsa later to see if there is a better diagram

 

[GXCars]

Hi Chris

Acording to ELSA

G505 Differential pressure sensor - says it must be adapted using diagnostics if being changed

G38 Lambda Sensor on the top of the DPF

G495 Temperature sender at the bottom

Fairly straightforward, either one of those 3 a leaky hose or the DPF is blocked

HTH


Ian

 

[AudiChris]

Hi Ian.
Ok, thanks for the clarification on the sensors etc.

The hoses to and from the sensor are all good, and visual inspection of the wiring to the sensors all look ok.

I have fitted and now trying to adapt the new DPF differential pressure sensor.

Using the procedure for for UDS protocol on the Wiki, after I select ADAPTATION OF DIFF PRESSURE PARTICULATE FILTER which finishes correctly, when I go back into the list, I do not get the option in the list for RESETTING OF LEARNED VALUES OF DIFF PRESSURE SENSOR.

The only options in the list for resetting learned values are -

IDE0046- Reset Oxygen sensor learned values.

IDE02147 - Resetting learned values of average quantity adaptation.

IDE02703 - Reset learned values quant meter unit and press contr valve.

The wiki page shows this for the 2.0 tdi CR engine , is there a different procedure for the 1.6 tdi CR ??

Thanks,

Chris.

 

[GXCars]

Hi Chris

There is another thread relating to a Golf on here if you google it that seemed to explain the process, seems you need to leave the ignition on for a minute after doing the basic settings

https://forums.ross-tech.com/showthread.php?9645-G450-Adaptation

HTH

Ian

 

[AudiChris]

Hi Ian.

Thanks for the thread info. After reading the thread, seems the info for adapting the G450 needs updating.

The wiki info is for the 2.0 CR , maybe the procedure for the 1.6 CR is different ??

I have now taken out all 3 temp sensors to bench test them at work, 1 at the turbo ( G235 ), 1 before dpf ( G495 ) and 1 after dpf ( G648 )

I will try the adaptation when I have refitted or replaced the temp sensors.

Thanks, Chris.

 

[smirnoffrules]

Hi Ian.

Thanks for the thread info. After reading the thread, seems the info for adapting the G450 needs updating.

The wiki info is for the 2.0 CR , maybe the procedure for the 1.6 CR is different ??

I have now taken out all 3 temp sensors to bench test them at work, 1 at the turbo ( G235 ), 1 before dpf ( G495 ) and 1 after dpf ( G648 )

I will try the adaptation when I have refitted or replaced the temp sensors.

Thanks, Chris.

how did you get on with this one , have the same , customer found 2 pence in egr pipe so its been deleted , l think this is the problem we have , l might just flash update and get full story

 

[smirnoffrules]

this was fine in the end ,just simple regen for 30 minutes was fine after we turn that option on