Results 1 to 3 of 3

Thread: 2012 VW TDI Sportwagen, P0401 *and* P2002 codes...

  1. #1
    Verified VCDS User
    Join Date
    Mar 2020
    Location
    USA
    Posts
    2
    Post Thanks / Like

    2012 VW TDI Sportwagen, P0401 *and* P2002 codes...

    So for the past 7 or 8 months, the check-engine light on my wife's car has been turning itself on and off... Maybe 3 or 4 months ago it came on and stayed on... I used a basic scan-tool and reset the codes to clear the CEL, but it came right back after 10 or 15 minutes of driving...

    So, anyway, this past weekend, it was time for an oil-change and a DSG transmission service, so I went ahead and did an auto-scan since I had my computer plugged into the car to measure the transmission-fluid temperature after the DSG service... It shows a "P0401 (001025) EGR Insufficient Flow -- Intermittent" code and a "P2002 (008194) Particulate Trap, Bank 1, Efficiency Below Threshold" code...

    The car has had the VW TDI emissions fix done, about 70,000 to 80,000 miles ago, give or take a bit. I honestly don't remember exactly when we did it, but I know the car had less than 120K miles on it when we did that, and it has 190K miles right now... It's been at least 3 years... If it's really important, I can call the dealer at which we had it done and get the exact date and mileage...

    Anyway, I'm hoping that fixing the EGR issue will fix the DPF code -- the DPF light is not on, only the check-engine light is on, and it doesn't seem to be doing any kind of extra regen or anything like that. My wife has noticed no issues with the car whatsoever -- no loss of power, no rough idle, nothing So it really doesn't seem as if the DPF is clogged...

    I just need to know what to check in the EGR system to figure out what's going on there... I've never dealt with this issue before, and I'm hoping that y'all will be able to give me some step-by-step instructions to diagnose the issue and fix it. Thanks!

    (I had just disconnected the battery for the transmission service, so you can ignore the stuff about the window-position error and the tire-pressure monitoring error in the auto-scan below -- those got fixed after.)

    Here's the auto-scan:
    Code:
    Sunday,01,March,2020,16:31:12:64594
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
    VCDS Version: 19.6.2.2 (x64)  HEX-V2 CB: 0.4508.4
    Data version: 20200210 DS308.0
    www.Ross-Tech.com
    
    
    VIN: 3VWPL7AJ7CM648231   License Plate: 
    Mileage: 305790km-190009mi   Repair Order: 
    
    
    
    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------
    
    
    Chassis Type: AJ-VW36 (7N0)
    Scan: 01 02 03 08 09 15 16 17 19 1C 25 2E 42 44 46 4F 52 56 62 72
              77
    
    VIN: 3VWPL7AJ7CM648231   Mileage: 305790km-190009miles
    
    01-Engine -- Status: Malfunction 0010
    02-Auto Trans -- Status: OK 0000
    03-ABS Brakes -- Status: Malfunction 0010
    04-Steering Angle -- Status: OK 0000
    08-Auto HVAC -- Status: OK 0000
    09-Cent. Elect. -- Status: Malfunction 0010
    15-Airbags -- Status: OK 0000
    16-Steering wheel -- Status: OK 0000
    17-Instruments -- Status: OK 0000
    19-CAN Gateway -- Status: OK 0000
    1C-Position Sensing -- Status: OK 0000
    25-Immobilizer -- Status: OK 0000
    2E-Media Player 3 -- Status: OK 0000
    42-Door Elect, Driver -- Status: Malfunction 0010
    44-Steering Assist -- Status: OK 0000
    46-Central Conv. -- Status: OK 0000
    4F-Centr. Electr. II -- Status: OK 0000
    52-Door Elect, Pass. -- Status: Malfunction 0010
    56-Radio -- 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 (CJA)       Labels: 03L-906-022-CBE.clb
       Part No SW: 03L 997 030 E    HW: 03L 907 309 AA
       Component: R4 2.0l TDI G000AG  9983  
       Revision: 12H14---    Serial number: 00000000000000
       Coding: 0050078
       Shop #: WSC 46741 001 1048576
       VCID: 303A195FC62C96A7795-8064
    
    3 Faults Found:
    008194 - Particulate Trap Bank 1 
                   P2002 - 007 - Efficiency Below Threshold - MIL ON
                 Freeze Frame:
                        Fault Status: 11100111
                        Fault Priority: 2
                        Fault Frequency: 1
                        Reset counter: 255
                        Mileage: 290725 km
                        Time Indication: 0
                        Date: 2014.02.20
                        Time: 07:42:49
    
                 Freeze Frame:
                        RPM: 1702 /min
                        Speed: 53.0 km/h
                        (no units): 66.3
                        (no units): 30.6
                        (no units): 2.73
                        Pressure: 203 mbar
                        Pressure: 28 mbar
    
    001025 - EGR System 
                   P0401 - 001 - Insufficient Flow - Intermittent
                 Freeze Frame:
                        Fault Status: 00100001
                        Fault Priority: 2
                        Fault Frequency: 191
                        Reset counter: 255
                        Mileage: 290754 km
                        Time Indication: 0
                        Date: 2014.02.20
                        Time: 16:38:17
    
                 Freeze Frame:
                        RPM: 2438 /min
                        Speed: 53.0 km/h
                        Voltage: 13.30 V
                        Load: 81.6 %
                        Load: 100.0 %
                        Mass Air / Rev.: 325.0 mg/str
                        Mass Air / Rev.: 340.0 mg/str
    
    001025 - EGR System 
                   P0401 - 002 - Insufficient Flow - Intermittent
                 Freeze Frame:
                        Fault Status: 00100010
                        Fault Priority: 2
                        Fault Frequency: 1
                        Reset counter: 255
                        Mileage: 305145 km
                        Time Indication: 0
                        Date: 2014.07.14
                        Time: 17:05:41
    
                 Freeze Frame:
                        RPM: 2599 /min
                        Speed: 131.0 km/h
                        Voltage: 13.91 V
                        Load: 100.0 %
                        Load: 100.0 %
                        Mass Air / Rev.: 770.0 mg/str
                        Mass Air / Rev.: 760.0 mg/str
    
    Readiness: 1 2 0 0 0 
    
    -------------------------------------------------------------------------------
    Address 02: Auto Trans        Labels: 02E-927-770.clb
       Part No SW: 02E 300 057 A    HW: 02E 927 770 AL
       Component: GSG DSG AG6     511 9334  
       Revision: 05351113    Serial number: 00001110011376
       Coding: 0000020
       Shop #: WSC 00066 000 00000
       VCID: 1768C2C34382619F18F-8042
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes (J104)       Labels:. 1K0-907-379-60EC1F.clb
       Part No SW: 1K0 907 379 BJ    HW: 1K0 907 379 BJ
       Component: ESP MK60EC1   H31 0121  
       Revision: 00H31001    
       Coding: 114B600C49260002880D06E7921A0042B70000
       Shop #: WSC 00066 000 00000
       VCID: 7BA0FE7353EAA5FF9C7-802E
    
    1 Fault Found:
    01325 - Control Module for Tire Pressure Monitoring (J502) 
                004 - No Signal/Communication - Intermittent
                 Freeze Frame:
                        Fault Status: 00100100
                        Fault Priority: 2
                        Fault Frequency: 1
                        Reset counter: 131
                        Mileage: 305792 km
                        Time Indication: 0
                        Date: 2014.07.23
                        Time: 00:58:09
    
                 Freeze Frame:
                        Count: 2
                        Count: 14
                        Count: 20480
                        Count: 16390
                        Count: 43008
                        Count: 0
                        Count: 258
                        Count: 0
    
    
    -------------------------------------------------------------------------------
    Address 08: Auto HVAC (J301)       Labels:| 3C8-907-336.clb
       Part No SW: 7N0 907 426 AN    HW: 7N0 907 426 AN
       Component: AC Manuell    H19 0404  
       Revision: 00001016    
       Coding: 0000001002
       Shop #: WSC 00066 000 00121
       ASAM Dataset: EV_ACManueBHBVW36X A01010
       ROD: EV_ACManueBHBVW36X_VW36.rod
       VCID: 005A899F3A8CC627C95-8054
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 09: Cent. Elect. (J519)       Labels:. 1K0-937-08x-09.clb
       Part No SW: 5K0 937 084 G    HW: 5K0 937 084 G
       Component: BCM PQ35 B    011 2048  
       Revision: BG011001    
       Coding: 2F380E1F802F3EC4008800817000004441000086535D0560648020200040
       Shop #: WSC 46741 001 1048576
       VCID: 36362F472848B897239-8062
    
       Subsystem 1 - Part No: 5K1 955 119   Labels: 1KX-955-119.CLB
       Component: Wischer 15111  26  0512 
       Coding: 009795
    
    1 Fault Found:
    01504 - Bulb for License-Plate Light (X) 
                010 - Open or Short to Plus - Intermittent
                 Freeze Frame:
                        Fault Status: 00101010
                        Fault Priority: 2
                        Fault Frequency: 42
                        Reset counter: 169
                        Mileage: 299904 km
                        Time Indication: 0
                        Date: 2014.05.18
                        Time: 16:26:36
    
                 Freeze Frame:
                            Term 15 On
                        Voltage: 14.25 V
                            ON
                            ON
                            OFF
                            OFF
                            OFF
    
    
    -------------------------------------------------------------------------------
    Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
       Part No SW: 5K0 959 655 H    HW: 5K0 959 655 H
       Component: AirbagVW10G   013 0724  
       Serial number: 003GVRA0MPEJ  
       Coding: 00003133
       Shop #: WSC 00066 000 00000
       ASAM Dataset: EV_AirbaVW10SMEVW360 A01014
       ROD: EV_AirbaVW10SMEVW360.rod
       VCID: 3FD84A6307F279DFF0F-806A
    
       Seat occupied recognition: 
       Subsystem 1 - Part No SW: 1KM 959 339 B    HW: 1KM 959 339 B
       Component: BF-Gewichtss.  006 0001 
       Serial number: ---0000R--00002B7C00
    
       Crash sensor for side airbag: driver side: 
       Subsystem 2 - Part No SW: 1KM 955 557     HW: 1KM 955 557 
       Component: S.Sens.Fahr.V  H01 ---- 
       Serial number: 3572MSME5F161365ZZZZ
    
       Crash sensor for side airbag: front passenger side: 
       Subsystem 3 - Part No SW: 1KM 955 557     HW: 1KM 955 557 
       Component: S.Sens.Beif.V  H01 ---- 
       Serial number: 3582MSME4D151665ZZZZ
    
       Crash sensor for side airbag: rear: driver side: 
       Component: S.Sens.Fahr.H  --- ---- 
       Serial number: 3511HSME0E103029ZZZA
    
       Crash sensor for side airbag: rear: passenger side: 
       Component: S.Sens.Beif.H  --- ---- 
       Serial number: 3521HSME1A152F29ZZZR
    
       Crash sensor for front airbag: driver side: 
       Component: F.Sens.Fahr  --- ---- 
       Serial number: 35527SME03254028ZZZ0
    
       Crash sensor for front airbag: front passenger side: 
       Component: F.Sens.Beif  --- ---- 
       Serial number: 35627SME77094028ZZZE
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 16: Steering wheel (J527)       Labels:| 5K0-953-569.clb
       Part No SW: 5K0 953 507 AH    HW: 5K0 953 549 B
       Component: Lenks.Modul   008 0080  
       Revision: --------    Serial number:  90440KIC000SX
       Coding: 188A140000
       Shop #: WSC 00066 000 00185
       ASAM Dataset: EV_SMLSNGKUDS A05001
       ROD: EV_SMLSNGKUDS_A05.rod
       VCID: 76B6EF476848F897E39-8022
    
       Multifunction steering wheel control module: 
       Subsystem 1 - Part No SW: 5K0 959 542 A    HW: 5K0 959 542 A  Labels: 3C8-959-537.CLB
       Component: E221__MFL-TAS  H09 0013 
       Serial number: 0691649             
       Coding: 820000
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb-SRI1
       Part No SW: 5K0 920 972 C    HW: 5K0 920 972 C
       Component: KOMBI         H32 0310  
       Revision: X0032006    Serial number:               
       Coding: 270F01
       Shop #: WSC 00066 000 00121
       ASAM Dataset: EV_KombiUDSMM9RM10 A04305
       ROD: EV_KombiUDSMM9RM10_A04_VW36.rod
       VCID: 303A195FCAAC96A7795-8064
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway (J533)       Labels:. 7N0-907-530-V2.clb
       Part No SW: 7N0 907 530 K    HW: 1K0 907 951 
       Component: J533  Gateway H40 1620  
       Revision:   H40       Serial number: 20101101290042
       Coding: 352002
       Shop #: WSC 00066 000 00000
       VCID: 382A217F225C4EE7315-806C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 1C: Position Sensing        Labels: 1Kx-919-xxx-1C.lbl
       Part No SW: 5N0 919 879     HW: 5N0 919 879 
       Component: Kompass         001 0001  
       Revision: 00001000    Serial number: 1225223RF2VT06
       Coding: 0000002
       Shop #: WSC 00066 000 00000
       VCID: 7EA6F7674CF8B0D7BB9-802A
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 25: Immobilizer (J334)       Labels:| 5K0-920-xxx-25.clb
       Part No SW: 5K0 953 234     HW: 5K0 920 972 C
       Component: IMMO          H32 0310  
       Revision: X0032006    Serial number:               
       Coding: 000000
       Shop #: WSC 00000 000 00000
       ASAM Dataset: EV_ImmoUDSMM9RM10 A01301
       ROD: EV_ImmoUDSMM9RM10_VW12.rod
       VCID: 6A8ECB372CF02C77771-803E
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 2E: Media Player 3 (J650)       Labels:. 5N0-035-342.lbl
       Part No SW: 5N0 035 342 E    HW: 5N0 035 342 E
       Component: SG EXT.PLAYER H13 0240  
       Revision: A1001003    Serial number: 7660747997    
       Coding: 010000
       Shop #: WSC 00066 000 00000
       VCID: 290CF43BE9F6E76FBEB-807C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 42: Door Elect, Driver (J386)       Labels:| 3C0-959-70X-GEN4.clb
       Part No SW: 561 959 701     HW: 3C0 959 793 B
       Component: TUER-SG FT    002 0501  
       Revision: 13110009    Serial number: 0003599273
       Coding: 0004B5
       Shop #: WSC 01383 790 50316
       ASAM Dataset: EV_TSGFPQ35BRFVW46X A04001
       ROD: EV_TSGFPQ35BRFVW46X_VW36.rod
       VCID: 5BE09EF3F3AA45FFFC7-800E
    
       Slave Driver: 
       Subsystem 1 - Part No SW: 3C0 959 703 C    HW: 3C0 959 795 D  Labels: 1K0-959-70X-GEN4.CLB
       Component: J388__TSG-HL  007 1509 
       Serial number: 00000006141036      
       Coding: 000490
    
    1 Fault Found:
    66048 - Motor for Front Window Regulator 
              B11EC 54 [008] - Missing Calibration / Basic Setting
              Intermittent - Confirmed - Tested Since Memory Clear
                 Freeze Frame:
                        Fault Status: 00000001
                        Fault Priority: 7
                        Fault Frequency: 1
                        Reset counter: 171
    
    
    -------------------------------------------------------------------------------
    Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
       Part No: 1K0 909 144 M
       Component: EPS_ZFLS Kl. 70     3201  
       Revision: 00H20000    
       Shop #: WSC 02069 000 90108
       VCID: 3432154F3234AA871DD-8060
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 4F: Centr. Electr. II (J520)       Labels:. 1K0-907-532.clb
       Part No SW: 7N0 907 532     HW: 1K0 907 951 
       Component: EZE_2         H40 1620  
       Revision:   H40       Serial number: 20101101290042
       Coding: 050B0500
       Shop #: WSC 00066 000 00000
       VCID: 6FB8DA231792C95F20F-803A
    
       Subsystem 1 - Part No SW: 8R0 959 591 A    HW: 8R0 959 591 
       Component: J245EE20SKB13  H02 0220 
       Serial number: 0123456789ABCDEFGHIJ
    
       Subsystem 2 - Part No SW: 8R0 959 591 A    HW: 8R0 959 591 
       Component: J394EE20SKB13  H02 0220 
       Serial number: 0123456789ABCDEFGHIJ
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 52: Door Elect, Pass. (J387)       Labels:| 3C0-959-70X-GEN4.clb
       Part No SW: 561 959 702     HW: 3C0 959 792 B
       Component: TUER-SG BT    002 0501  
       Revision: 15110009    Serial number: 0003544102
       Coding: 0004B4
       Shop #: WSC 01383 790 50316
       ASAM Dataset: EV_TSGBPQ35BRFVW46X A04001
       ROD: EV_TSGBPQ35BRFVW46X_VW36.rod
       VCID: 5CE29DEFF6A442C7F5D-8008
    
       Slave Passenger: 
       Subsystem 1 - Part No SW: 3C0 959 704 C    HW: 3C0 959 794 D  Labels: 1K0-959-70X-GEN4.CLB
       Component: J389__TSG-HR  006 1509 
       Serial number: 00000005974099      
       Coding: 000490
    
    1 Fault Found:
    66048 - Motor for Front Window Regulator 
              B11EC 54 [008] - Missing Calibration / Basic Setting
              Intermittent - Confirmed - Tested Since Memory Clear
                 Freeze Frame:
                        Fault Status: 00000001
                        Fault Priority: 7
                        Fault Frequency: 1
                        Reset counter: 171
    
    
    -------------------------------------------------------------------------------
    Address 56: Radio (J503)       Labels:. 5M0-035-1xx-56.clb
       Part No SW: 1K0 035 180 AE    HW: 1K0 035 180 AE
       Component: Radio Prem-8  H02 0016  
       Revision: -----16S    Serial number: VWZ4Z7L3221794
       Coding: 01000400040007
       Shop #: WSC 00066 000 00000
       VCID: 6390A613CB5A7D3FB47-8036
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 77: Telephone (J412)       Labels:| 7P6-035-730.clb
       Part No SW: 5K0 035 730 E    HW: 5K0 035 730 E
       Component: TELEFON       H09 2902  
       Revision: 1B001001    Serial number: 00007660756438
       Coding: 0A10040000010100
       Shop #: WSC 01383 790 50316
       ASAM Dataset: EV_UHVNA A01719
       ROD: UHVNA.rod
       VCID: 2708F203FF62D11FA8F-8072
    
    No fault code found.
    
    End----------(Elapsed Time: 01:26, VBatt start/end: 12.2V/12.2V)-----------

  2. #2
    Ross-Tech Employee DrPeter's Avatar
    Join Date
    Jan 2014
    Location
    16.4905 S, 151.7375 W
    Posts
    1,308
    Post Thanks / Like
    Hello,

    The car has had the VW TDI emissions fix done, about 70,000 to 80,000 miles ago, give or take a bit. I honestly don't remember exactly when we did it, but I know the car had less than 120K miles on it when we did that, and it has 190K miles right now... It's been at least 3 years... If it's really important, I can call the dealer at which we had it done and get the exact date and mileage...
    Actually based on my calculations, your vehicle was driven 62,973 miles and 922 days have passed since the "TDI diesel emissions modification".

    You can view this information here: https://www.vwdieselinfo.com

    Extended Emissions Warranty Information*:

    The vehicle has an Extended Emissions Warranty that runs for 10 years or 120,000 miles from the original in-service date. Please see your VW dealership for additional information including the vehicle's in-service date.

    In addition, and concurrently, the Extended Emissions Warranty runs for 4 years or 48,000 miles (whichever occurs first) from the date of modification or first dealer resale post-modification. Your vehicle was modified on Aug 23, 2017 and 127,036 miles. Please see your VW dealership for additional information on the vehicle's post-modification dealer re-sale date.

    We have a Ross-Tech wiki page for the fault code P0401 - Exhaust Gas Recirculation (EGR) System: Insufficient Flow Detected that maybe helpful.

    As per the Ross-Tech wiki page, the Volkswagen Technical Service Bulletin [2034898] is helpful to determine if there is a concern with the possible restrictions in the EGR filter and if the DPF & EGR filter need to be replaced. . You will need to remove the EGR cooler pipe and check for soot, see the TSB.

    TSBs and other Factory Repair information can be found here, Official Factory Repair Information. See the links...


    Sometimes you can perform the Diesel Particle Filter Emergency Regeneration when you have a P2002 fault code. But you should correct the P0401 fault code first.

    Hope this helps,

    drpeter

  3. Likes Uwe liked this post
  4. #3
    Verified VCDS User
    Join Date
    Mar 2020
    Location
    USA
    Posts
    2
    Post Thanks / Like
    Quote Originally Posted by DrPeter View Post
    Actually based on my calculations, your vehicle was driven 62,973 miles and 922 days have passed since the "TDI diesel emissions modification".

    You can view this information here: https://www.vwdieselinfo.com
    Oh -- wow. I had no idea you could check that on line -- very cool! I thought it was longer ago than that... Either way, the warranty is long gone, which I figured was the case...


    Quote Originally Posted by DrPeter View Post
    We have a Ross-Tech wiki page for the fault code P0401 - Exhaust Gas Recirculation (EGR) System: Insufficient Flow Detected that maybe helpful.
    So this is what that Wiki page says:
    Possible Solutions:
    - Check/Clean Exhaust Gas Recirculation (EGR) System
    - Check/Replace Exhaust Gas Recirculation (EGR) Valve
    - Check Wiring and/or Connector(s) from/to Exhaust Gas Recirculation (EGR) Valve
    But I have no idea how to do any of those things... Got any links to any videos or step-by-step procedures that would show me how to do that?

    I did check out the links on the Official Factory Repair Information page -- but I doubt the official VW manuals will tell me how to use VCDS to test the EGR valve, right? Do y'all have something on the website here that would show me how to do that?

    Thanks...

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •