Audi A7 3.0 V6 , CRTE , 2015 , DPF regen with pictures, video and parameters

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JMR

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This afternoon got a A7 which came for a diagnosis after some electrical repairs done somewhere else. Check ON , diesel flashing, no acceleration over 3000 rpm. After a full scan , engine had sensor 1 for EGT , particle filter overloaded and under efficiency . After a short checking in the engine bay, i discovered sensor 1 for EGT wiring chewed through by a mouse ( intial problem at the first shop where they repaired few other wires but they didn't discover this one). After fixing wire , error for EGT sensor 1 was gone, engine still in error/limp mode because of DPF overload ( 13.55 g measured and 39.90 calculated ) . Last regen was around 794 kms ago , so i sent the customer on a 50 kms regen effort by himself, but that failed . Customer asked for a static regen and i started the procedure ( i usually don't do static regens but it had a crazy UDS ecu and i didn't have the patience to mess around in Adaptation channels for regen while driving , so i entered BS and did a static one ) , which took about 25 mins . After full regen ( down to 1.74 g measured and 2.40 g clalculated) , no more erros . Customer happy , gave him a 20 % discount for diagnosis , wire repair and regen because he's a repeat business client. Car was a UK model ( right hand drive ) , i asked the customer to take a short video with the car in the "smoky phase" :). Video doesn't do justice to the actual thing lol

Initial log ( edited for engine ecu only ) :

Code:
Monday,31,October,2022,17:57:45:31189
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x86
VCDS Version: 22.9.0.0  HEX-NET2 CB: 0.4623.4
Data version: 20220830 DS341.0
www.Ross-Tech.com

Dealer/Shop Name: JMR Car Diagnostic Services
Workshop Code: 599 34641 003519

VIN: WAUZZZ4G5FN097343   License Plate: GR 24 VYS 5
Mileage: 86718km-53884mi   Repair Order:



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Chassis Type: 4G-AU57 (4G0)
Scan: 01 02 03 05 08 09 15 16 17 19 28 30 36 3B 42 44 46 47 52 53
          55 5F 62 6D 72 85 AC

VIN: WAUZZZ4G5FN097343   Mileage: 86718km-53884miles

01-Engine -- Status: Malfunction 0010

-------------------------------------------------------------------------------
Address 01: Engine (J623-CRTE)       Labels: Redir Fail!
   Part No SW: 4G2 907 311 C    HW: 4G2 907 401
   Component: 3.0TDI EDC17  X34 0002
   Revision: 92X34---    CVN: BA36A6D715D91B8D92F1EF3C
   Coding: 1A254012042601030800
   Shop #: WSC 92521 052 00000
   ASAM Dataset: EV_ECM30TDI0114G2907311C 001002
   ROD: EV_ECM30TDI011_AU57.rod
   VCID: 251C9BB445669B73B45-8070
   VINID: 9D196AAAA1171567802470C40C8AD9055F

4 Faults Found:
5188 - Particle Filter
          P2463 00 [175] - Excessive Soot Accumulation
          MIL ON - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 86630 km
                    Date: 2022.10.31
                    Time: 11:40:30

                    Engine RPM: 0.00 /min
                    Normed load value: 0.0 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 87 °C
                    Intake air temperature: 25 °C
                    Ambient air pressure: 1010 mbar
                    Voltage terminal 30: 11.740 V
                    Unlearning counter according OBD: 40
                    P Flt Ld fac Ash Cor: 0.9310
                    Particul.filter diff.pressure: 0 hPa
                    Exh t Adap T Oxi Cat Ds: 122.3 °C
                    Exh t Adap TP Flt Ds: 91.8 °C
                    Current operating mode_2-Bits 0-7: 0
                    Current operating mode_2-Bits 0-7: 16
                    Current operating mode_2-Bits 0-7: 1
                    Current operating mode_2-Bits 0-7: 128

9645 - Reductant
          P20E8 00 [175] - Pressure too Low
          MIL ON - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 86631 km
                    Date: 2022.10.31
                    Time: 11:44:24

                    Engine RPM: 1051.50 /min
                    Normed load value: 31.0 %
                    Vehicle speed: 73 km/h
                    Coolant temperature: 95 °C
                    Intake air temperature: 27 °C
                    Ambient air pressure: 1010 mbar
                    Voltage terminal 30: 14.160 V
                    Unlearning counter according OBD: 40
                    Outside temperature: 20.5 °C
                    Pressure sensor for reducing agent: measured pressure: -500 hPa
                    Pump for reducing agent: speed: 2964.0 /min
                    Sensor for reducing agent tank temperature: temperature: 19.1 °C
                    Reducing agent pump: activation: 50.00 %

5189 - Particulate Trap Bank 1
          P2002 00 [175] - Efficiency Below Threshold
          MIL ON - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 86630 km
                    Date: 2022.10.31
                    Time: 11:40:30

                    Engine RPM: 0.00 /min
                    Normed load value: 0.0 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 87 °C
                    Intake air temperature: 25 °C
                    Ambient air pressure: 1010 mbar
                    Voltage terminal 30: 11.740 V
                    Unlearning counter according OBD: 40
                    Ambient temperature: 19.0 °C
                    DPF: offset for differential pressure: 0 hPa
                    Particle filter: soot mass measured: 13.55 g
                    Particle filter: soot mass calculated: 39.30 g
                    Particle filter: kilometers since last regeneration: 794506 m
                    Particle filter field regeneration: cancel conditions-Bits 0-7: 0
                    Particle filter field regeneration: cancel conditions-Bits 0-7: 0

5260 - Sensor 1 for Exhaust Temp Bank 1 (G235)
          P0544 00 [175] - Circuit Malfunction
          MIL ON - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 86630 km
                    Date: 2022.10.31
                    Time: 11:40:27

                    Engine RPM: 0.00 /min
                    Normed load value: 0.0 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 86 °C
                    Intake air temperature: 25 °C
                    Ambient air pressure: 1010 mbar
                    Voltage terminal 30: 11.740 V
                    Unlearning counter according OBD: 40
                    Exhaust gas temperature sensor 1: 1000.0 °C
                    Exhaust gas temperature sensor 2: 129.0 °C
                    Exhaust gas temperature sensor 3: 122.3 °C
                    Exhaust gas temperature sensor 4: 91.8 °C
                    Shut-off timer: last engine shut-off time: 351 s

Readiness: 1 4 0 0 1

-------------------------------------------------------------------------------


instrument cluster while in regen ( 2000 rpm )




End of regen ( the engine RPM got back to normal ) and the values for measured /calculated came down nearly close to one another





VIDEO :beginning of regen , smoky Audi A7 for cca 25 minutes :)



Scan after regen :

Code:
Monday,31,October,2022,20:04:06:31189
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x86
VCDS Version: 22.9.0.0  HEX-NET2 CB: 0.4623.4
Data version: 20220830 DS341.0
www.Ross-Tech.com

Dealer/Shop Name: JMR Car Diagnostic Services
Workshop Code: 599 34641 003519

VIN: WAUZZZ4G5FN097343   License Plate: GR 24 VYS 7



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


                Address 01: Engine       Labels: Redir Fail!
Control Module Part Number: 4G2 907 311 C    HW: 4G2 907 401
  Component and/or Version: 3.0TDI EDC17  X34 0002
           Software Coding: 1A254012042601030800
            Work Shop Code: WSC 92521 052 00000
              ASAM Dataset: EV_ECM30TDI0114G2907311C 001002 (AU57)
                       ROD: EV_ECM30TDI011_AU57.rod
                      VCID: 251C9BB445669B73B45-8070
No fault code found.


Readiness: 0 0 0 0 1
 
Last edited:
   #2  

JMR

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A thing or two to ask @Uwe : since i don t do static regens by choice here s the first question : after the ecu finished the regen phase and engine rpm went down to normal , the instructions still indicated to keep the brake and accelerator pressed ( though it seemed to have finished the phase ). So i turned the ign off , restarted the car too keep it on cooling phase , exited the vcds session and all was good. Was that the correct way to finish it ? I was waiting for the instruction to indicate " finished " or something or other.
Second question : this being a UDS ecu , in the Adaptation channels ( after login with 27971 i think ) login code was accepted and from the pull down menu you have a IDE which allows for regen while driving with a value of 0 . In the New Value field i typed 1 , do it , but that seemed incorrect and got rejected. I thought of inputting 0001 ( i kinda remembered this in a flash of remembrance from setting a dpf reset on a Crafter ) but i didn t insisted on it so i proceeded with a static regen given the low mileage of the car . So , was 1 incorrect value inputted and it should ve been 0001 instead ?
Thanks
 
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donmusico

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in the Adaptation channels ( after login with 27971 i think ) login code was accepted and from the pull down menu you have a IDE which allows for regen while driving with a value of 0 . In the New Value field i typed 1 , do it , but that seemed incorrect and got rejected. I thought of inputting 0001 ( i kinda remembered this in a flash of remembrance from setting a dpf reset on a Crafter ) but i didn t insisted on it so i proceeded with a static regen given the low mileage of the car . So , was 1 incorrect value inputted and it should ve been 0001 instead ?
Thanks
In this method you are turning on the regenerate of dpf while driving, so that's why you don't see effect. When you change from 0 to 1 you have to go on the road and follow steps in instruction of regenrate dpf while driving
 
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JMR

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In this method you are turning on the regenerate of dpf while driving, so that's why you don't see effect. When you change from 0 to 1 you have to go on the road and follow steps in instruction of regenrate dpf while driving
Yes you do , however the 1 was not accepted and i think i should ve put 0001. There are no other instructions to follow for a regen while driving other than respecting a certain speed and engine load .
 
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donmusico

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I think that you can't do regeneration while driving after regeneration done stationary while standing. My SQ5 accept 1 in adaptation normally
 
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NEtech

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General info for this adaptation:
  • Fuel tank above 1/4
  • Engine temperature above 70°C
  • Activate climatic and all available power consumers
  • Engine at idle
  • Activate SA
  • Activate Channel
  • Maybe find IDE meas.values 2229 2234 2236 and watch
  • Drive now above 60 km/h, 2000-2500 rpm
 
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JMR

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I think that you can't do regeneration while driving after regeneration done stationary while standing. My SQ5 accept 1 in adaptation normally
I agree with you , but first i tried to do it while driving..then having no joy in setting the car up for it..i did it static
 
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JMR

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General info for this adaptation:
  • Fuel tank above 1/4
  • Engine temperature above 70°C
  • Activate climatic and all available power consumers
  • Engine at idle
  • Activate SA
  • Activate Channel
  • Maybe find IDE meas.values 2229 2234 2236 and watch
  • Drive now above 60 km/h, 2000-2500 rpm
As long as you introduce the correct digit into the new values field of such ide and it allows you to save it. In my case the value of 1 did not get accepted nor saved in that ide and VCDS didn t pop a bubble to help out there. That damn car at 60 kmh is at 1400 rpm in the 5th gear manual. I would think that 4th would increase to 2000 rpm s maybe. Anyway , next time i would try a value of 0001 and see if it gets accepted.
 
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Uwe

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A thing or two to ask @Uwe :
Despite having owned several diesels (2009 T'reg 3.0; 2013 NMS Passat 2.0; 2015 T'reg 3.0; RAM 1500 3.0), I'm the wrong person to ask. I've never had to initiate a regen of any type because I use my diesels appropriately; primarily long distances on the highway, generally at 70-80 miles/hour (120-130 km/h). If my wife drives one on short trips for a while, I'll make a point of taking it out on a good highway run occasionally, which allows it to do it's thing without being forced.

-Uwe-
 
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JMR

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Despite having owned several diesels (2009 T'reg 3.0; 2013 NMS Passat 2.0; 2015 T'reg 3.0; RAM 1500 3.0), I'm the wrong person to ask. I've never had to initiate a regen of any type because I use my diesels appropriately; primarily long distances on
ok. like i said, if a new opportunity comes knocking i'll do the 0001 and see if that works. I'll keep current this post.
 
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