- Joined
- Apr 17, 2026
- Messages
- 5
- Reaction score
- 3
- Location
- Minnesota, USA
- VCDS Serial number
- C?ID=635084
Hi All,
Having trouble with this A7 with the "death countdown"
Car originally had the following DTC's (sorry did not save the original auto-scan)
-P0401 EGR insufficient flow
-P229F Nox sensor rear circuit range/performance
-P20F4 Nox reductant consumption too low (Won't clear)
-P207F Reductant quality performance (Won't clear)
This is the most recent:
The following repairs have been made, all with OE parts from the dealer
1. Replaced a faulty reductant pump. (Pump was not building pressure, 30hpa. I have 5000hpa with the new pump)
2. Replaced the EGR cooler. (P0401 no longer sets after multiple test drives)
3. Drained and filled SCR tank with Ad blue from the dealer
After those 3 repairs, I performed the following:
-SCR metering quantity test. (Filled my measuring cup to 30ml)
-Resetting of SCR tank level detection
-Reset SCR lock
-Resetting of learning values for reductant agent metering system
-SCR efficiency test
The problem I am having is I cannot get the LTA for reductant dosing to reset. Looking through other posts I believe this number should be at 1. This car is at 4.16 which I believe is way too high. I've taken it for multiple, long test drives (50+ miles) at steady cruise on the freeway.
Some data I observed while testing:
-During SCR efficiency test:
Reductant injector activation 6-9% (would cycle from 0 to 6-9%)
Reductant pump pressure 5000hpa
SCR catalyst temp 290-310C
Nox1-290ppm
Nox2-50ppm
-During long test drive on freeway (steady cruise):
Reductant injector activation 0-70% (would usually cycle from 0-10% but would go up to 70% depending on throttle)
Reductant pump pressure 5000hpa
SCR catalyst temp 310C
Nox1- 80ppm
Nox2- 300 to 400ppm
After seeing the Nox readings on my multiple test drives I decided to install a new rear Nox sensor (OE from the dealer). Pretty much the same Nox readings as previous test drives, and the LTA for reductant dosing does not get much better. I'm thinking the SCR catalyst is bad??? Not sure of a good way to prove it, or if there is something else I'm missing...
Side note:
The customer has a obd2 code reader sitting on the seat. I did find out by just checking for DTCs, the SCR lock will reset. Thinking maybe that is how they were "getting by" for awhile. Possibly damaged the SCR catalyst? Or skewed the adaptions so badly they cannot be reset?
Cheers Everyone!!!
Having trouble with this A7 with the "death countdown"
Car originally had the following DTC's (sorry did not save the original auto-scan)
-P0401 EGR insufficient flow
-P229F Nox sensor rear circuit range/performance
-P20F4 Nox reductant consumption too low (Won't clear)
-P207F Reductant quality performance (Won't clear)
This is the most recent:
Code:
VIN: WAU2MAFC9EN017116 License Plate:
Mileage: 142173km-88342mi Repair Order:
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Chassis Type: FC-AU57 (4G0)
Scan: 01 02 03 05 08 09 10 15 16 17 19 28 36 3B 3C 42 44 46 47 52
53 55 56 5F 62 6C 6D 72 8F 90 AC
VIN: WAU2MAFC9EN017116 Mileage: 142173km-88342miles
01-Engine -- Status: Malfunction 0010
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
05-Acc/Start Auth. -- Status: Malfunction 0010
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: Malfunction 0010
28-HVAC, Rear -- Status: Malfunction 0010
36-Seat Mem. Drvr -- Status: OK 0000
3B-Sensor Elect. -- Status: OK 0000
3C-Lane Change -- Status: OK 0000
42-Door Elect, Driver -- Status: Malfunction 0010
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: Malfunction 0010
47-Sound System -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
56-Radio -- Status: OK 0000
5F-Information Electr. -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
6C-Back-up Cam. -- Status: OK 0000
6D-Trunk Elect. -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
8F-Pretens. Frt Left -- Status: OK 0000
90-Pretens. Frt Right -- Status: OK 0000
AC-Reductant Control -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (J623-CPNB) Labels:. 059-907-401-V2.clb
Part No SW: 4G0 907 401 N HW: 4G0 907 401 E
Component: 3.0TDI FSA H14 0016
Revision: 58H14--- CVN: FC1A821BCEF5C587D45710C1755A21130E1FC39E
Coding: 1A2A4012052601050000
Shop #: WSC 64597 003 1048576
ASAM Dataset: EV_ECM30TDI0114G0907401N 002016
ROD: EV_ECM30TDI0114G0907401N_002.rod
VCID: 2E0E7C68E09981CA6DF-807A
VINID: 9D19427515932557800470411841B6E619
2 Faults Found:
9954 - NOx Reductant Consumption too Low
P20F4 00 [00100111] - -
Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 1
Mileage: 142173 km
Date: 2026.04.17
Time: 14:01:16
Engine speed: 0.00 /min
Normed load value: 0.0 %
Vehicle speed: 0 km/h
Coolant temperature: 74 C
Intake air temperature: 21 C
Ambient air pressure: 960 mbar
Voltage terminal 30: 13.360 V
Unlearning counter according OBD: 40
Long-term adaptation of reduction agent dosage: 4.16
Measured NOx conversion range 1: 0.000
Efficiency threshold of NOx conversion range 1: 0.000
Mean temperature of SCR catalyst: 31.8 C
NOx sensor 1: NOx concentration: 0 ppm
NOx sensor 2: NOx concentration: 0 ppm
Particle filter: unburned fuel calculated: 0.134
9953 - Reductant Quality Performance
P207F 00 [00100111] - -
Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 1
Mileage: 142173 km
Date: 2026.04.17
Time: 14:01:16
Engine speed: 0.00 /min
Normed load value: 0.0 %
Vehicle speed: 0 km/h
Coolant temperature: 74 C
Intake air temperature: 21 C
Ambient air pressure: 960 mbar
Voltage terminal 30: 13.360 V
Unlearning counter according OBD: 40
Long-term adaptation of reduction agent dosage: 4.16
Measured NOx conversion range 1: 0.000
Efficiency threshold of NOx conversion range 1: 0.000
Mean temperature of SCR catalyst: 31.8 C
NOx sensor 1: NOx concentration: 0 ppm
NOx sensor 2: NOx concentration: 0 ppm
Particle filter: unburned fuel calculated: 0.134
Readiness: 0 0 0 1 1
-------------------------------------------------------------------------------
Address 02: Auto Trans (J217) Labels:| 0BK-927-156.clb
Part No SW: 4G0 927 158 Q HW: 0BK 927 156 AM
Component: 0BK 30 TDIUSA H16 1008
Revision: --H16--- CVN: 13B31F1C
Coding: 000001
Shop #: WSC 00000 000 00000
ASAM Dataset: EV_TCMAL551211 002022
ROD: EV_TCMAL551211_002_AU48.rod
VCID: 3C2A462026E5635AD3B-8068
No fault code found.
-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104) Labels:. 4G0-907-379-V1.clb
Part No SW: 4G0 907 379 L HW: 4G0 907 379 L
Component: ESP PREMIUM H09 0450
Revision: -------- Serial number: --------------
Coding: 27A79703E4E5E9C04B00
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_ESPPremiAU57X 004039
ROD: EV_ESPPremiAU57X_004_AU57.rod
VCID: 3A2640382CD15D6AC17-806E
No fault code found.
-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J393) Labels:. 8K0-907-064-05.clb
Part No SW: 4H0 907 064 CR HW: 4H0 907 064 CR
Component: BCM2 2.0 H33 0433
Revision: 00002001
Coding: 0DAA2046000000000000
Shop #: WSC 02391 785 00200
VCID: 7BA8853C63EBA4629A1-802E
Subsystem 2 - Part No SW: 4H0 905 852 C HW: 4H0 905 852 C
Component: J764 ELV MLB H40 0046
Serial number: 2313000100989006
1 Fault Found:
02823 - Requirements for Locking the Steering Column Lock not met
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 5
Fault Frequency: 2
Reset counter: 96
Mileage: 141671 km
Time Indication: 0
Date: 2026.03.25
Time: 17:26:17
-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255) Labels:| 4G0-820-043-4Z.clb
Part No SW: 4G0 820 043 AF HW: 4G0 820 043 AF
Component: KLIMA 4 ZONEN H13 0087
Serial number: 07061300041626
Coding: 368320BA49
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_AirCondiComfoUDS 002040
ROD: EV_AirCondiComfoUDS_002.rod
VCID: 6398DD5CFBDB7CA2B21-8036
No fault code found.
-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519) Labels:. 4H0-907-063-V1.clb
Part No SW: 4H0 907 063 CG HW: 4H0 907 063
Component: BCM1 2.0 H12 0130
Revision: 11012002 Serial number: 00000001736045
Coding: 0D072091073E9FE081000884A0003820CF9CD208A6090225800308457B00
Shop #: WSC 02391 785 00200
VCID: 6FB0A16C2793C8C2269-803A
Subsystem 1 - Part No SW: 4G1 955 119 HW: 4G8 955 119 Labels: 1KX-955-119.CLB
Component: WWS57X 130525 H36 0080
Serial number: 130605152056
Coding: 0045F7
Subsystem 2 - Part No SW: 8U0 955 559 B HW: 8U0 955 559 B Labels: 8U0-955-559.CLB
Component: G397_RLFS H06 0002
Serial number: 21401811
Coding: 02006E
Subsystem 3 - Part No SW: 4G0 941 531 E HW: 4G0 941 531 E
Component: E1 - LDS H07 0044
Serial number: 05 06 2013 00001063
Subsystem 4 - Part No SW: 4G0 907 410 A HW: 4H0 907 410 A
Component: USHL4.2 H30 0030
Serial number: 0000002274555R6DKJ02
Subsystem 5 - Part No SW: 8K0 959 772 E HW: 8K0 959 772
Component: SLR-B8 H06 0007
Serial number: 0061836889
Coding: 853000
Subsystem 6 - Part No SW: 4G0 907 472 HW: 4G0 907 472
Component: A31 LED Mod1L H02 0002
Serial number: 00000000001305272057
Subsystem 7 - Part No SW: 4G0 907 472 HW: 4G0 907 472
Component: A27 LED Mod1R H02 0002
Serial number: 00000000001305271619
Subsystem 8 - Part No SW: 4H0 907 705 K HW: 4H0 907 705 C
Component: EVLS-SG H08 0300
Serial number: WA105523000003772933
Coding: 020300
Subsystem 9 - Part No SW: 4H0 907 658 HW: 4H0 907 658
Component: AQ_Hum_Sensor H03 0003
Serial number: C508CFA6000000000001
Subsystem 10 - Part No SW: 4G0 907 472 A HW: 4G0 907 472 A
Component: A32 LED Mod2L H02 0002
Serial number: 00000000001305130540
Subsystem 11 - Part No SW: 4G0 907 472 A HW: 4G0 907 472 A
Component: A28 LED Mod2R H02 0002
Serial number: 00000000001305130114
No fault code found.
-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J446) Labels:| 4H0-919-475-7X2.clb
Part No SW: 4H0 919 475 AA HW: 4H0 919 475 AG
Component: PARKHILFE ACC H01 0083
Revision: 11001001 Serial number: 61061316800308
Coding: A8C304
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_EPHVA18AU57X0000 004009
ROD: EV_EPHVA18AU57X0000_004.rod
VCID: 71B4A7143127DE3230D-8024
No fault code found.
-------------------------------------------------------------------------------
Address 15: Airbags (J234) Labels:* 4H0-959-655.clb
Part No SW: 4G0 959 655 A HW: 4G0 959 655 A
Component: Airbag10.43 H33 0033
Revision: -------- Serial number: 003D80033SFU Dataset Number: 4G8909602D 0004
Coding: 303145313131303030394A55304C34473853
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_AirbaAU10BPAAU64X 001014
ROD: EV_AirbaAU10BPAAU64X_VW51.rod
VCID: 33386D1C0BBBAC22021-8066
Seat occupant detection:
Subsystem 1 - Part No SW: 5C6 959 339 B HW: 5C6 959 339 B
Component: BF-Gewichtss. H10 0046
Serial number: 6940000Y130000UTLR0Z
Crash sensor for side airbag: driver side:
Serial number: 3575HRB401450I7EC0IT
Crash sensor for side airbag: passenger side:
Serial number: 3585HRB4063217O018JM
Crash sensor for side airbag: driver side rear:
Serial number: 3515JRB400Q50IBOQPOJ
Crash sensor for side airbag: passenger side rear:
Serial number: 3525JRB400Q50IBOKPND
Crash sensor for front airbag: driver side:
Serial number: 3554VRB400O50ITUGHCQ
Crash sensor for front airbag: passenger side:
Serial number: 3564VRB400O50ITUHPL2
No fault code found.
-------------------------------------------------------------------------------
Address 16: Steering wheel (J527) Labels:. 4H0-953-568.clb
Part No SW: 4H0 953 568 H HW: 4H0 953 568 H
Component: Lenks.Modul H03 0005
Revision: -------- Serial number: 90372MFA001B4
Coding: 000414
Shop #: WSC 02391 785 00200
VCID: 38225A30125D4F7A373-806C
Subsystem 1 - Part No SW: 4G0 951 528 F HW: 4G0 951 528 F
Component: E221 - MFL H09 0010
Serial number: 11 04 2013 A1151592
No fault code found.
-------------------------------------------------------------------------------
Address 17: Instruments (J285) Labels:| 4H0-920-xxx-17.clb-SRI1
Part No SW: 4G8 920 984 HW: 4G8 920 984
Component: TDieUsa Nv H80 0618
Revision: 30460230 Serial number: 658070613596019
Coding: 0BE602060B43D705020100
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_RBD4K 004048
ROD: EV_RBD4K_AU57.rod
VCID: 73B8AD1C4B3BEC22C21-8026
No fault code found.
-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533) Labels:| 4H0-907-468.clb
Part No SW: 4G0 907 468 AC HW: 4G0 907 468 AC
Component: J533--Gateway H12 0037
Revision: -------- Serial number: 00000000975341 Dataset Number: 4G8909515J 0062
Coding: 00CD077D00
Shop #: WSC 02391 785 00200
GVL: FDA1E84CFE63600F0000
ASAM Dataset: EV_GatewPkoUDS 001018
ROD: EV_GatewPkoUDS_001_AU57.rod
VCID: 71B4A7143127DE3230D-8024
Control module for battery monitoring:
Subsystem 1 - Part No SW: 8T0 915 181 HW: 8T0 915 181
Component: J367-BDMHella H03 8041
Serial number: 6480170803
Voltage stabilizer:
Subsystem 2 - Part No SW: 8K0 959 663 F HW: 8K0 959 663
Component: J532_DCDCStab H23 0021
Serial number: 1304150000000000027C
1 Fault Found:
5603 - No Communication with Control Module for SCR Reductant
U010E 00 [00001000] - -
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 1
Reset counter: 96
Mileage: 141672 km
Date: 2026.04.06
Time: 08:52:23
Voltage terminal 30: 13.1 V
Voltage terminal 15: 13.4 V
Control Module temperature: 27 C
System status: Terminal 15 on
IN ESP_standstill flag: standstill detected
Engine is running: OFF
IN ZAS_Te_X: On
Terminal 15 status via CAN: On
Terminal 15 status: On
Datenfeld: 0
-------------------------------------------------------------------------------
Address 28: HVAC, Rear (E265) Labels:* 4G0-919-158.clb
Part No SW: 4G0 919 158 K HW: 4G0 919 158 K
Component: KLIMA FOND H07 0087
Serial number: 08061300040145
Coding: 20
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_ClimaContrUnitRearUDS 002019
ROD: EV_ClimaContrUnitRearUDS_002.rod
VCID: 3720590C1FC340023E9-8062
2 Faults Found:
0033 - Motor for Rear Right Upper Body Vent
B10D4 22 [00001001] - Signal Amplitude Too High
Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 3
Fault Frequency: 254
Reset counter: 61
Mileage: 127286 km
Date: 2024.10.23
Time: 12:26:00
Voltage terminal 30: 13.64 V
Outside temperature: 12.0 C
Right Rear Upper Body Vent Motor-Actual value: 11706
Right Rear Upper Body Vent Motor-Specified value: 11706
Right Rear Upper Body Vent Motor-Stop open: 11405
Right Rear Upper Body Vent Motor-Stop closed: 10000
0034 - Motor for Rear Right Upper Body Vent
B10D4 21 [00001000] - Signal Amplitude Too Low
Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 3
Fault Frequency: 41
Reset counter: 88
Mileage: 139933 km
Date: 2026.01.12
Time: 11:12:05
Voltage terminal 30: 14.60 V
Outside temperature: 3.5 C
Right Rear Upper Body Vent Motor-Actual value: 9399
Right Rear Upper Body Vent Motor-Specified value: 9399
Right Rear Upper Body Vent Motor-Stop open: 11405
Right Rear Upper Body Vent Motor-Stop closed: 10000
-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr (J136) Labels: None
Part No SW: 4G8 959 760 A HW: 4G8 959 760 A
Component: MEM-FS H03 0154
Revision: AA000000 Serial number: 00000063752535
Coding: C0581B008F006001000001010101102030303232203232
Shop #: WSC 02391 785 00200
VCID: 38225A30125D4F7A373-806C
No fault code found.
-------------------------------------------------------------------------------
Address 3B: Sensor Elect. (J849) Labels: 4G0-907-637.clb
Part No SW: 4G0 907 637 K HW: 4G0 907 637 F
Component: SARA 6D H02 0056
Revision: -------- Serial number: EJ1BPA8203UKS% Dataset Number: 4G8909573A 0001
Shop #: WSC 00000 000 00000
ASAM Dataset: EV_SARA2 005012
ROD: EV_SARA2.rod
VCID: 363E540818C9B90A25F-8062
No fault code found.
-------------------------------------------------------------------------------
Address 3C: Lane Change Labels: Redir Fail!
Part No SW: 4G0 907 566 J HW: 4G0 907 566
Component: J769 SWA MasterH04 0060
Revision: 00H04000 Serial number: 6PZ 010 287-08
Coding: 0000007
Shop #: WSC 02391 785 00200
VCID: 363E54081449B90A25F-8062
Subsystem 1 - Part No: 4G0 907 568 J
Component: J770 SWA Slave H04 0060
Subsystem 2 - Serial number: 6PZ 010 287-28
Subsystem 3 - Serial number: 5F30.05.1300H04000AMS15157
Subsystem 4 - Serial number: S15157
No fault code found.
-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386) Labels:. 4H0-959-793.clb
Part No SW: 4G8 959 793 H HW: 4G8 959 793 F
Component: TSG FA H04 0507
Revision: -------- Serial number: --------------
Coding: 011F5F025E00628002000412
Shop #: WSC 02391 785 00200
VCID: 45DC23C455AF2292BC5-8010
1 Fault Found:
02124 - Exterior Door Handle Switch
008 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 3
Fault Frequency: 1
Reset counter: 85
Mileage: 141418 km
Time Indication: 0
Date: 2026.03.15
Time: 13:25:10
-------------------------------------------------------------------------------
Address 44: Steering Assist (J500) Labels:| 4G0-909-144.clb
Part No SW: 4G0 909 144 L HW: 4G0 909 144 G
Component: RCEPS H36 0010
Revision: 00001000 Serial number: 0007565167 Dataset Number: 4G8909852J 0027
Coding: 101000010000
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_RCEPS 009008
ROD: EV_RCEPS_009.rod
VCID: 32366818F4A1A52A097-8066
No fault code found.
-------------------------------------------------------------------------------
Address 46: Central Conv. (J393) Labels:. 4H0-907-064-46.clb
Part No SW: 4H0 907 064 CR HW: 4H0 907 064 CR
Component: BCM2 2.0 H33 0433
Revision: 00002001 Serial number: 0309548521
Coding: 0126023A20FAF08580A00A8402030D470000000000000000000000000000
Shop #: WSC 02391 785 00200
VCID: 7BA8853C63EBA4629A1-802E
Subsystem 1 - Part No SW: 4G0 959 719 HW: 4G0 959 719
Component: GTO BF H01 0080
Serial number: 00000000000000156639
Subsystem 2 - Part No: 1K0 951 605 C
Component: LIN BACKUP HO H05 1501
Subsystem 3 - Part No SW: 4G8 959 591 HW: 7P0 959 591 C
Component: J245 PS40.039 H01 0008
Serial number: WOO2224135-
Coding: 101F00
Subsystem 4 - Part No SW: 4G0 947 135 G HW: 4G0 947 135
Component: Dachelektroni H10 0100
Serial number: 0000000AP00003678975
Coding: 010000
Subsystem 5 - Part No SW: 4G8 959 252 HW: 4G8 959 252
Component: HSP-SG H11 0029
Serial number: WA106023000003814324
Subsystem 6 - Part No SW: 3AA 962 243 B HW: 3AA 962 243 B
Component: GEB.F.Heckoef H16 0810
Serial number: 93027824
1 Fault Found:
03976 - Control Module for Rear Lid/Hatch Opening: Play Protection Active
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 6
Fault Frequency: 1
Reset counter: 99
Mileage: 141892 km
Time Indication: 0
Date: 2026.04.10
Time: 13:31:20
-------------------------------------------------------------------------------
Address 47: Sound System (J525) Labels: None
Part No SW: 4G0 035 223 C HW: 4G0 035 223 A
Component: BOSE-G3-C7 H07 0160
Revision: CJ007001 Serial number: 00000000003362
Coding: 030000
Shop #: WSC 02391 785 00200
VCID: 1D6CABA49DBF0A52C45-8048
No fault code found.
-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387) Labels:. 4H0-959-792.clb
Part No SW: 4G8 959 792 H HW: 4G8 959 792 F
Component: TSG BF H04 0507
Revision: -------- Serial number: --------------
Coding: 011F5F025E00628002000402
Shop #: WSC 02391 785 00200
VCID: 44DA3EC05E951B9AABB-8010
No fault code found.
-------------------------------------------------------------------------------
Address 53: Parking Brake (----) Labels: 8K0-907-801-V2.clb
Part No SW: 4H0 907 801 G HW: 4H0 907 801 A
Component: EPB-4 H03 0014
Revision: -------- Serial number: 00000000719759 Dataset Number: 4G8909522C 0006
ASAM Dataset: EV_ParkiBrake 001028
ROD: EV_ParkiBrake_VW51.rod
VCID: 2C0A7660D685F3DA43B-8078
No fault code found.
-------------------------------------------------------------------------------
Address 55: Headlight Range (J431) Labels:| 8X0-907-357.clb
Part No SW: 4H0 907 357 B HW: 4H0 907 357 B
Component: ....LWR12.... H02 0010
Serial number: 130612-0002-109
Coding: 1223A6601002A500
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_HeadlRegulBasic 005001
ROD: EV_HeadlRegulBasic_AU35.rod
VCID: 2D0C7B64ED9FFAD2545-8078
No fault code found.
-------------------------------------------------------------------------------
Address 56: Radio (R) Labels:. 4F0-035-0xx-56.clb
Part No SW: 4G0 035 082 G HW: 4G0 035 082
Component: Radio U SIRIU H60 0133
Revision: AB001007 Serial number: 156F-0D7813325
Coding: 020007010000000001
Shop #: WSC 02391 785 00200
VCID: 241A9E40BED53B9A8BB-8070
No fault code found.
-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794) Labels:. 4E0-035-6xx-5F.clb
Part No SW: 4G0 035 746 E HW: 4G0 035 746 E
Component: H-BNT-NA H40 0735
Revision: -------- Serial number: 194F/0D7535920
Coding: 090200040003E1EF55128B1E00000003100001000000000000
Shop #: WSC 02391 785 00200
VCID: 29048F74D9F7E6F2B8D-807C
Subsystem 1 - Part No: 8R0 060 884 BD
Component: NAR 2013/2014 0802
Subsystem 2 - Part No SW: 4G0 919 605 C HW: 4G0 919 605 C
Component: DU8 C7 SV H43 0021
Serial number: AUZ8ZDDD001QXSU
Subsystem 3 - Part No SW: 4G1 919 610 C HW: 4G1 919 610 C
Component: E380 BDT C7 H11 0204
Serial number: 90349MFA00127
Subsystem 4 - Part No: 8R0 060 961 F
Component: CD-Database 5298
No fault code found.
-------------------------------------------------------------------------------
Address 62: Door, Rear Left (J388) Labels:. 4H0-959-795.clb
Part No SW: 4G8 959 795 H HW: 4G8 959 795 F
Component: TSG HL H03 0507
Revision: -------- Serial number: --------------
Coding: 010F1F024000628002000002
Shop #: WSC 02391 785 00200
VCID: 47C029CC6FA330824E9-8012
No fault code found.
-------------------------------------------------------------------------------
Address 6C: Back-up Cam. Labels: 4H0-907-441.clb
Part No SW: 4G0 907 441 B HW: 4H0 907 441
Component: SG Rueckfahrkamera 0061
Revision: --H07--- Serial number: 525 PA8J35GAF8
Coding: 1080013
Shop #: WSC 02391 785 00200
VCID: 261E8448C4E9C98A95F-8072
No fault code found.
-------------------------------------------------------------------------------
Address 6D: Trunk Elect. (----) Labels:| 7N0-959-107.clb
Part No SW: 4G8 959 107 R HW: 4G8 959 107 G
Component: HDSG-Modul H13 0043
Revision: 12013001 Serial number: 101300170 Dataset Number: 4G8909541F 0023
Coding: 0A3305C102
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_HDSGAu573 001022
ROD: EV_HDSGAu571_AU57.rod
VCID: 44DA3EC05E151B9AABB-8010
No fault code found.
-------------------------------------------------------------------------------
Address 72: Door, Rear Right (J389) Labels:. 4H0-959-795.clb
Part No SW: 4G8 959 795 H HW: 4G8 959 795 F
Component: TSG HR H03 0507
Revision: -------- Serial number: --------------
Coding: 010F1F024000628002000002
Shop #: WSC 02391 785 00200
VCID: 47C029CC6FA330824E9-8012
No fault code found.
-------------------------------------------------------------------------------
Address 8F: Pretens. Frt Left (J854) Labels: 4H0-980-94x-RGS.clb
Part No SW: 4H0 980 945 B HW: 4H0 980 945 C
Component: RGS-VL H13 0080
Dataset Number: 4G0909614C 0001
Coding: 0006E008031F0300070308014244CA010000
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_RGS_L 002004
ROD: EV_RGS_L.rod
VCID: 31346714F1A79E3270D-8064
No fault code found.
-------------------------------------------------------------------------------
Address 90: Pretens. Frt Right (J855) Labels: 4H0-980-94x-RGS.clb
Part No SW: 4H0 980 946 B HW: 4H0 980 946 C
Component: RGS-VR H13 0080
Dataset Number: 4G0909615C 0001
Coding: 0006E008031F0300070308014244CA010000
Shop #: WSC 02391 785 00200
ASAM Dataset: EV_RGS_R 002004
ROD: EV_RGS_R.rod
VCID: 32366818F4A1A52A097-8066
No fault code found.
-------------------------------------------------------------------------------
Address AC: Reductant Control (J880) Labels: 4G0-907-355.clb
Part No SW: 4G0 907 355 G HW: 4G0 907 355 B
Component: SCR-Stg-G2 H10 0013
Revision: 00000000 Serial number: 230460039
ASAM Dataset: EV_RDCMA00100 008040
ROD: EV_RDCMA00100.rod
VCID: 2F30616CE79388C2669-807A
No fault code found.
End----------(Elapsed Time: 02:58, VBatt start/end: 13.4V/13.1V)-----------
------------------------------8 Faults Found-------------------------------The following repairs have been made, all with OE parts from the dealer
1. Replaced a faulty reductant pump. (Pump was not building pressure, 30hpa. I have 5000hpa with the new pump)
2. Replaced the EGR cooler. (P0401 no longer sets after multiple test drives)
3. Drained and filled SCR tank with Ad blue from the dealer
After those 3 repairs, I performed the following:
-SCR metering quantity test. (Filled my measuring cup to 30ml)
-Resetting of SCR tank level detection
-Reset SCR lock
-Resetting of learning values for reductant agent metering system
-SCR efficiency test
The problem I am having is I cannot get the LTA for reductant dosing to reset. Looking through other posts I believe this number should be at 1. This car is at 4.16 which I believe is way too high. I've taken it for multiple, long test drives (50+ miles) at steady cruise on the freeway.
Some data I observed while testing:
-During SCR efficiency test:
Reductant injector activation 6-9% (would cycle from 0 to 6-9%)
Reductant pump pressure 5000hpa
SCR catalyst temp 290-310C
Nox1-290ppm
Nox2-50ppm
-During long test drive on freeway (steady cruise):
Reductant injector activation 0-70% (would usually cycle from 0-10% but would go up to 70% depending on throttle)
Reductant pump pressure 5000hpa
SCR catalyst temp 310C
Nox1- 80ppm
Nox2- 300 to 400ppm
After seeing the Nox readings on my multiple test drives I decided to install a new rear Nox sensor (OE from the dealer). Pretty much the same Nox readings as previous test drives, and the LTA for reductant dosing does not get much better. I'm thinking the SCR catalyst is bad??? Not sure of a good way to prove it, or if there is something else I'm missing...
Side note:
The customer has a obd2 code reader sitting on the seat. I did find out by just checking for DTCs, the SCR lock will reset. Thinking maybe that is how they were "getting by" for awhile. Possibly damaged the SCR catalyst? Or skewed the adaptions so badly they cannot be reset?
Cheers Everyone!!!
