2014 AUDI A6 AVANT 2.0 TDI Ultra - DPF Issue plus others :(

   #1  

PuddyTat

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So, I'm new to this whole VAG thing so have invested in the Hex-Net as an enthusiastic amature. While I have worked on vehicles for years, I've virtually no experience with the modern electronic systems.

I've had a DPF issue and hoped this would help work out what is going on. Unfortunately, it seems there are a couple of faults :(

My main issue is DPF Bank 1. My local garage is not AUDI but tried 4 forced regens. This dropped everything to fine limits for 5 days before the engine management light was back on. They are stumped and hadn't seen a dual sensor DPF before so aren't sure how to progress or what the fault really is (replace the DPF?).

Then comes the Instrument Cluster. Seems it has no basic coding?

Next is the AC. This was fine until a week ago and now won't operate. Is this needing the system refilled or a new sensor and if a sensor, where is it hidden?

Last is the fuel cap and flap. Seems there's a short to ground and I should check the wiring. Any assistance on the location of the wiring would be appreciated.


Thank you all in advance your your help!

Code:
hassis Type: 4G-AU57 (4G5)
Scan: 01 03 05 08 09 10 15 16 17 19 3B 42 44 46 52 53 5F 62 6D 72
          AC

VIN: WAUZZZ4G4EN187470   Mileage: 177944km-110569miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
08-Auto HVAC -- Status: Malfunction 0010
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: Malfunction 0010
19-CAN Gateway -- Status: OK 0000
3B-Sensor Elect. -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: Malfunction 0010
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
5F-Information Electr. -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
6D-Trunk Elect. -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
AC-Reductant Control -- Status: OK 000

-------------------------------------------------------------------------------
Address 01: Engine (J623-CNHA)       Labels:. 04L-907-309-V1.clb
   Part No SW: 04L 906 021 FE    HW: 04L 907 309 
   Component: R4 2,0L EDC   H23 8243  
   Revision: 85H23---    
   Coding: 12194012242401080000
   Shop #: WSC 24297 000 1048576
   ASAM Dataset: EV_ECM20TDI01104L906021FE 002007
   ROD: EV_ECM20TDI01104L906021FE_002.rod
   VCID: 6D9221EEBCE5832CC3-8038

1 Fault Found:
19226 - Particulate Trap Bank 1 
          P2002 00 [101] - Efficiency Below Threshold
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 4
                    Mileage: 177746 km
                    Date: 2018.03.13
                    Time: 08:53:49

                    Engine speed: 1670.00 /min
                    Normed load value: 63.9 %
                    Vehicle speed: 61 km/h
                    Coolant temperature: 82 °C
                    Intake air temperature: 70 °C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 14.400 V
                    Unlearning counter according OBD: 40
                    Exhaust mass flow of low-pressure EGR: calculated: 3.015
                    Differential pressure ratio: low-pressure EGR: 24.5 kg/h
                    Exh.recircul. 2: differential pres.sensor 1 bank 1: adap. value: 30.4 hPa
                    Exhaust recirculat.2: different.press.sens.1 bank 1: raw value: 29.1 hPa
                    Exh.recircul.valve 1 bank 1: pos.feedback - Act.value: 64.10 %
                    Exhaust recirc.valve 2 bank 1: posit.feedback - Act.value: 40.28 %
                    Exh. gas recirc. 2: diff. press. sensor 1 bank 1: dyn. value: 31.0 hPa

Readiness: 0 0 0 0 0 
-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels:* None
   Part No SW: 4G0 820 043 BA    HW: 4G0 820 043 BA
   Component: KLIMA 2 ZONEN H14 0096  
   Serial number: 11071400110129
   Coding: 3422090821
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_AirCondiBasisUDS 004002
   ROD: EV_AirCondiBasisUDS_004.rod
   VCID: 5F8E4B264649E1BC41-800A

1 Fault Found:
0267 - Sensor for Refrigerant Pressure and Temperature 
          B10C2 21 [009] - Signal Amplitude Too Low
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 7
                    Fault Frequency: 4
                    Reset counter: 216
                    Mileage: 177738 km
                    Date: 2018.03.13
                    Time: 08:26:17

                    Compressor current: actual value: 0 mA
                    Outside air temperature: 6.0 °C
                    Temperature after evaporator: 4.64 °C
                    Engine speed: 981 /min
-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:. 4H0-920-xxx-17.clb-SRI1
   Part No SW: 4G8 920 950 S    HW: 4G8 920 950 S
   Component: MDieGb        H43 0411  
   Revision: 27450259    Serial number: 658160714592048
   Coding: 33A4120003412600010000
   Shop #: WSC 02391 785 00200
   ASAM Dataset: EV_RBC7KMID 004048
   ROD: EV_RBC7KMID.rod
   VCID: 3FCEABA6A609C1BC21-806A

1 Fault Found:
1048578 - No Basic Setting 
          B2010 00 [009] -  - 
          [Steuergerät keine oder falsche Grundeinstellung / Adaption]
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 208
                    Mileage: 177719 km
                    Date: 2018.03.12
                    Time: 09:24:49
-------------------------------------------------------------------------------
Address 46: Central Conv. (J393)       Labels:. 4H0-907-064-46.clb
   Part No SW: 4H0 907 064 FH    HW: 4H0 907 064 EH
   Component: BCM2 2.0      H36 0551  
   Revision: 00002001    Serial number: 0340547598    
   Coding: 013B0622A0B930408320090400010F470000000000000000000000000000
   Shop #: WSC 02391 785 00200
   VCID: 74A4348AD7CF52E40C-8020

   Subsystem 1 - Part No: 4G0 951 177 
   Component: DWA-Sensor  H01 0010 

   Subsystem 2 - Part No: 1K0 951 605 C
   Component: LIN BACKUP HO  H05 1501 

2 Faults Found:
02616 - Fuel Tank Cap; Unlock 
            009 - Open or Short to Ground
             Freeze Frame:
                    Fault Status: 01101001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 208
                    Mileage: 177719 km
                    Time Indication: 0
                    Date: 2018.03.12
                    Time: 09:59:06

02615 - Fuel Tank Cap; Lock 
            009 - Open or Short to Ground
             Freeze Frame:
                    Fault Status: 01101001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 208
                    Mileage: 177719 km
                    Time Indication: 0
                    Date: 2018.03.12
                    Time: 09:59:22
 
   #2  

Uwe

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At 110,000 miles, it might indeed be time for a new DPF, or at least a good cleaning.

Instrument cluster fault: Someone buggered up the values in the Service Reminder channels.

Tank flap lock: Might be just an open circuit.

-Uwe-
 
   #3  

PuddyTat

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Thanks for the reply.

Is there a good way to clean out the DPF? Did see a post referring to using cleaning products somewhere...

As for the instruments, I take it it's back to AUDI to resolve?


Thanks in advance,

P.
 
   #4  

Keithuk

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Have you checked the Oil Ash Volume, Carbon Mass (spec.), Carbon Mass (meas.)? DPF readings and health of DPF

In the UK there are companies that clean DPF's I don't know if they have them in USA.
 
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