G450 DPF P2002 Fault

wycombephil · Mar 4, 2019

Hi all

Looking for some help diagnosing a p2002 fault code on my Golf Mk7 TDI 1.6 Bluemotion.

I have replaced the G450 sensor and performed an adaptation. I think the differential pressure values look normal (5hPa at idle up to 100hPa at 2500RPM)

The DPF soot values look normal too (15g soot load / 21% ash load) and the DPF is performing an auto regen every 300 miles or so.

So why am I getting the p2002 fault? Any help / ideas appreciated.

Thanks

Autoscan result below

Code:

Monday,04,March,2019,19:18:05:18630
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: WVWZZZAUZFW093244   License Plate: 


Chassis Type: AU-VW37 (5Q0)
Scan: 01 03 08 09 15 16 17 19 42 44 52 5F

VIN: WVWZZZAUZFW093244   Mileage: 98079km-60943miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- 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: Malfunction 0010
19-CAN Gateway -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
5F-Information Electr. -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (J623-CRKB)       Labels:. 04L-907-309-V1.clb
   Part No SW: 04L 906 021 FD    HW: 04L 907 309 E
   Component: R4 1,6L EDC   H22 6544  
   Revision: 86H22---    
   Coding: 01190012030511096000
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_ECM16TDI01104L906021FD 002004
   ROD: EV_ECM16TDI01104L906021FD.rod
   VCID: 6C81C6FD860F7B07525-8038

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: 1
                    Mileage: 98060 km
                    Date: 2019.03.03
                    Time: 17:44:28

                    Engine speed: 1827.50 /min
                    Normed load value: 56.5 %
                    Vehicle speed: 108 km/h
                    Coolant temperature: 90 °C
                    Intake air temperature: 90 °C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 14.180 V
                    Unlearning counter according OBD: 40
                    Exhaust mass flow of low-pressure EGR: calculated: 23.807
                    Differential pressure ratio: low-pressure EGR: 27.9 kg/h
                    Exh.recircul. 2: differential pres.sensor 1 bank 1: adap. value: 857.4 hPa
                    Exhaust recirculat.2: different.press.sens.1 bank 1: raw value: 1057.0 hPa
                    Exh.recircul.valve 1 bank 1: pos.feedback - Act.value: 50.31 %
                    Exhaust recirc.valve 2 bank 1: posit.feedback - Act.value: 44.70 %

Readiness: 0 0 0 0 0 

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels: 5Q0-907-379-IPB-V1.clb
   Part No SW: 5Q0 907 379 CK    HW: 5Q0 907 379 G
   Component: ESC           H31 0472  
   Revision: 00000000    Serial number: 62144000002735
   Coding: 01FA8AA12429096F0379060441C72580512490C06082A4F300400078C002
   Shop #: WSC 131071 1023 2097151
   ASAM Dataset: EV_Brake1UDSContiMK100IPB 033001
   ROD: EV_Brake1UDSContiMK100IPB_033_VW37.rod
   VCID: 074B9951BFA9B85FDF7-8052

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J301)       Labels:| 5G0-907-426.clb
   Part No SW: 5G0 907 426 Q    HW: 5G0 907 426 Q
   Component: AC Manuell    H02 0907  
   Revision: 00001K06    
   Coding: 00120104202100001000000000000000
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_ACManueBHBVW37X 003019
   ROD: EV_ACManueBHBVW37X_003_VW37.rod
   VCID: 392F2FA9B9DD1EAF993-806C

   Fresh Air Blower Front: 

   Refrigerant Pressure And Temperature Sender: 

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:| 5Q0-937-08X-BV1.clb
   Part No SW: 5Q0 937 084 AF    HW: 5Q0 937 084 AF
   Component: BCM MQBAB B   H18 0134  
   Serial number: 01011421700177
   Coding: 03000842C20100530BA44000000403081000000000000000000000000000
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_BCMCONTI 013000
   ROD: EV_BCMBOSCH_013.rod
   VCID: 7CA1F6BDF66FEB87C25-8028

   Control Unit For Wiper Motor: 
   Subsystem 1 - Part No SW: 5G2 955 119 A    HW: 5G2 955 119 A  Labels: 5QX-955-119-V1.CLB
   Component: WWS    140724  042 0551 
   Serial number:         140728103713
   Coding: 0E4DDD

1 Fault Found:
197644 - Control Circuit for Fuel Tank Flap 
          B1263 01 [009] - Electrical Failure
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 15
                    Mileage: 98051 km
                    Date: 2019.03.03
                    Time: 15:17:42


-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5Q0-959-655.clb
   Part No SW: 5Q0 959 655 D    HW: 5Q0 959 655 D
   Component: AirbagVW20    014 0385  
   Serial number: 003F6R0ABP7I
   Coding: 98CCC000000000005C0000CF00C800000065
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_AirbaVW20SMEVW37X 002130
   ROD: EV_AirbaVW20SMEVW37X.rod
   VCID: 41DF4749D10D466FD13-8014

   Side Sensor Driver Front: 
   Subsystem 1 - Part No SW: -----------    HW: 480 001 408 14
   Component: SideSensor_Df  001 0887 
   Serial number: 35767000000CD969C014
   Coding: 2D2D2D

   Side Sensor Passenger Front: 
   Subsystem 2 - Part No SW: -----------    HW: 480 001 408 14
   Component: SideSensor_Pf  001 0887 
   Serial number: 3586700000023935B01K
   Coding: 2D2D2D

   Side Sensor Driver Rear: 
   Subsystem 3 - Part No SW: -----------    HW: 480 401 408 14
   Component: SideSensor_Dr  001 6149 
   Serial number: 3516502AF16DB804A11G
   Coding: 2D2D2D

   Side Sensor Passenger Rear: 
   Subsystem 4 - Part No SW: -----------    HW: 480 401 408 14
   Component: SideSensor_Pr  001 6149 
   Serial number: 3526502B716DB812618C
   Coding: 2D2D2D

   Front Sensor Driver: 
   Subsystem 5 - Part No SW: -----------    HW: 480 401 408 14
   Component: FrontSensor_D  001 6149 
   Serial number: 3556502B116DB8140332
   Coding: 2D2D2D

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:| 5Q0-953-549.clb
   Part No SW: 5Q0 953 507 AB    HW: 5Q0 953 549 
   Component: Lenks. Modul  007 0070  
   Revision: --------    Serial number: 16081404400602
   Coding: 0600
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_SMLSKLOMQB 009001
   ROD: EV_SMLSKLOMQB_012_AU37.rod
   VCID: 76B5E495C843B1D7B41-8022

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5G0-920-XXX-17.clb-SRI3
   Part No SW: 5G1 920 931     HW: 5G1 920 931 
   Component: KOMBI         106 5292  
   Coding: 27A4020023002600010808000400000000000000
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_DashBoardJCIMQBAB 009003
   ROD: EV_DashBoardJCIMQBAB_009_VW37.rod
   VCID: 6597B3D965E54A4F0DB-8030

1 Fault Found:
10485833 - Internal Control Module Memory Check Sum Error 
          B2000 49 [009] - Internal electronic failure
          [Steuergerät defekt (SiLa) "Sicherheitswarnlampe"]
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 58398 km
                    Date: 2017.06.12
                    Time: 10:50:40


-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:| 5Q0-907-530-V1.clb
   Part No SW: 5Q0 907 530 R    HW: 5Q0 907 530 D
   Component: GW MQB Low    126 1188  
   Revision: --------    Serial number: 0002381931
   Coding: 030000040B087300EF000048080E00010001050000000000000000000000
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_GatewLear 011016
   ROD: EV_GatewLear_011_VW37.rod
   VCID: 40D9424DDA074F67DED-8014

   Alternator: 

   Battery Monitoring Control Module: 
   Subsystem 2 - Part No SW: 5Q0 915 181 E    HW: 5Q0 915 181 E
   Component: J367-BDMHella  H03 8043 
   Serial number: 0261694103          

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:| 5QX-959-X93-42.clb
   Part No SW: 5Q0 959 393 B    HW: 5Q0 959 393 B
   Component: TSG FS        020 0025  
   Serial number: 02081402090430
   Coding: 003002208001040100001000
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_DCUDriveSideEWMINKLO 006003
   ROD: EV_DCUDriveSideEWMAXCONT.rod
   VCID: 3E253CB5A0F33997AC1-806A

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist (J500)       Labels:| 5Q0-909-144.clb
   Part No SW: 5Q0 909 144 P    HW: 5Q0 909 144 P
   Component: EPS_MQB_ZFLS  122 1043  
   Coding: 0103
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_SteerAssisMQB 010031
   ROD: EV_SteerAssisMQB_010.rod
   VCID: 41DF4749D10D466FD13-8014

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:| 5QX-959-X92-52.clb
   Part No SW: 5Q0 959 392 B    HW: 5Q0 959 392 B
   Component: TSG BFS       020 0025  
   Serial number: 20061403110497
   Coding: 003000208001040100801000
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_DCUPasseSideEWMINKLO 006003
   ROD: EV_DCUPasseSideEWMAXCONT.rod
   VCID: 3D273BB9ADF5228FB5B-8068

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels:| 5G0-035-MIB-STD1.clb
   Part No SW: 5G0 035 820 A    HW: 5G0 035 820 A
   Component: MU-S-D-ER     041 0421  
   Serial number: V5C01908142162
   Coding: 02730000FF00000021111201000800001F0100060100010001
   Shop #: WSC 01357 011 00200
   ASAM Dataset: EV_MUStd4CPASE 002039
   ROD: EV_MUStd4CPASE_VW37.rod
   VCID: 1F1BE1310739509F877-804A

   Operating And Display Unit 1: 
   Subsystem 1 - Part No SW: 5G0 919 605     HW: 5G0 919 605 
   Component: ABT_Std_Radio  H60 0030 
   Serial number: VWZ8Z9PS203EP4      

No fault code found.

End----------(Elapsed Time: 01:20, VBatt start/end: 14.4V/14.2V)-----------

Uwe · Mar 4, 2019

Hi and welcome to our forum. Nice first post, with a complete Auto-Scan wrapped in CODE tags. :thumbs:

I'm going to recommend you Get Verified so we can move this to the Car Repair section, where it will get more attention.

I wonder if this ECU would benefit from a software update? You have version 6544, and according to this site, a substantially newer version 9231 is available.

-Uwe-

HMC · Mar 5, 2019

Hi wycombephil,
Was it a genuine G450 sensor?
Regards HMC

wycombephil · Mar 5, 2019

Uwe
Thanks for your quick reply. I'll sort my registration out tonight

A couple of questions if I may:
1 I dont think VCDS can perform flash upgrade. Is that correct a d if so do you recommend any tools to do this?
2 do you know of any information that will explain the logic behind the p2002 code. If this.... then that....

HMC
Thanks for your reply. Yes, it was a genuine VW part

HMC · Mar 5, 2019

An independent with ODIS or a passthru interface and a subscription to VW could do the flash update. Have you tried to see if a forced regen is available? Otherwise a DPF clean might be required, what is the DPF pressure KOEO?
Regards HMC

wycombephil · Mar 5, 2019

KOEO is 1hPa

Can do a forced regen with VCDS but wanted to understand the root cause first as I didn't think the pressures seemed that high (100hPa at 2500RPM)

wycombephil · Mar 6, 2019

Now registered

wycombephil · Mar 13, 2019

OK, problem now solved so here's the full write up from problem report to resolution.

Car : VW Gold mk 7 Bluemotion 1.6 TDI 2015 UK model

2 months ago CEL light came on for the first time. No previous problems. Car had done around 60,000 miles

Took it to local garage who read the fault code as P2002. Thought it was probably down to bad diesel so reset light and sent me on my way. I bought a fault code reader / resetter on my way home

In the last month or so CEL light kept coming back on, typically 100 or so miles after a reset and normally soon after the engine warmed up (maybe 15mins into journey). Always p2002 code. Car performance / economy was not affected.

Took it to a different garage nearer work who told me the DPF was blocked and quote £1000 for to remove / clean / refit or nearly £2000 for remove / replace / refit. Based on that I was prepared to do a little digging myself....

Bought a Carista buetooth OBDII adaptor and VAG DPF (full) and Torque (full) apps for Android phone.

From VAG DPF I determined that the DPF regen cycle seemed to be working fine (triggered every 300 miles and soot values reduced from ~22g to ~5g during the regen). Also showed that the oil ask value was ~25% / 21g. The limit for the car is 100% / 80g. At this point I still didn't know the cause but stringly suspected it was not the DPF. Torque was useful for resetting the CEL but limited otherwise.

Bought VCDS software from Gendan.co.uk (great service by the way - thank you!) and ran an Autoscan (results above). Again, nothing obvious but further research suggested that a p2002 code can be cause by a failed G450 pressure sensor. Also that non-genuine G450 sensors are unreliable.

Ordered genuine VW G450 sensor from local agent. Fitted and (I thought...) adapted with VCDS. Drove for a couple of days then CEL light came back on.

Based on Uwe's advice above I bought and hour's access to the VW repair manual for the car via the erwin.volkswagen.de website (again, great info here even if you do have to pay for it!). Found that I had replaced the wrong sensor :rolleyes:

G450 has 2 pipes connected to it
G505 has 1 pipe connected to it

Kind of obvious when you consider that the G450 is a differential pressure sensor across the exhaust but I assumed that the downstream pressure was pretty much atmospheric so it shouldn't make a lot of difference.

So, swapped the sensors over (fortunately I hadn't thrown the "bad" sensor away), re-adapted with VCDS and now all is well.

So, I spent a little over £300 pounds including parts, software etc. vs the £1000 I was quoted AND I get to use VCDS to satisfy my inner geek. I think it will be a good long term investment as we are a 2 Golf family and have no plans to change cars any time soon.

Thanks to Uwe and HMC above for you suggestions. Hope this write up helps someone else.

Uwe · Mar 13, 2019

wycombephil said:
Now registered

Sorry, I missed that. Moving this to the Car Repair section.

wycombephil said:
So, I spent a little over £300 pounds including parts, software etc. vs the £1000 I was quoted AND I get to use VCDS to satisfy my inner geek. I think it will be a good long term investment as we are a 2 Golf family and have no plans to change cars any time soon.

And it sounds like spending the £1000 would not have fixed the actual problem.

:thumbs:

-Uwe-

Racediagnostics · Sep 10, 2020

wycombephil said:
OK, problem now solved so here's the full write up from problem report to resolution......

Thanks for the write up, I had a P2002 today in an identical car and mileage and will dig out my cable and investigate tomorrow.

Kejo · Jul 5, 2022

I have the same fault code.I going to change DPF differen

wycombephil said:
OK, problem now solved so here's the full write up from problem report to resolution.

Car : VW Gold mk 7 Bluemotion 1.6 TDI 2015 UK model

2 months ago CEL light came on for the first time. No previous problems. Car had done around 60,000 miles

Took it to local garage who read the fault code as P2002. Thought it was probably down to bad diesel so reset light and sent me on my way. I bought a fault code reader / resetter on my way home

In the last month or so CEL light kept coming back on, typically 100 or so miles after a reset and normally soon after the engine warmed up (maybe 15mins into journey). Always p2002 code. Car performance / economy was not affected.

Took it to a different garage nearer work who told me the DPF was blocked and quote £1000 for to remove / clean / refit or nearly £2000 for remove / replace / refit. Based on that I was prepared to do a little digging myself....

Bought a Carista buetooth OBDII adaptor and VAG DPF (full) and Torque (full) apps for Android phone.

From VAG DPF I determined that the DPF regen cycle seemed to be working fine (triggered every 300 miles and soot values reduced from ~22g to ~5g during the regen). Also showed that the oil ask value was ~25% / 21g. The limit for the car is 100% / 80g. At this point I still didn't know the cause but stringly suspected it was not the DPF. Torque was useful for resetting the CEL but limited otherwise.

Bought VCDS software from Gendan.co.uk (great service by the way - thank you!) and ran an Autoscan (results above). Again, nothing obvious but further research suggested that a p2002 code can be cause by a failed G450 pressure sensor. Also that non-genuine G450 sensors are unreliable.

Ordered genuine VW G450 sensor from local agent. Fitted and (I thought...) adapted with VCDS. Drove for a couple of days then CEL light came back on.

Based on Uwe's advice above I bought and hour's access to the VW repair manual for the car via the erwin.volkswagen.de website (again, great info here even if you do have to pay for it!). Found that I had replaced the wrong sensor

G450 has 2 pipes connected to it
G505 has 1 pipe connected to it

Kind of obvious when you consider that the G450 is a differential pressure sensor across the exhaust but I assumed that the downstream pressure was pretty much atmospheric so it shouldn't make a lot of difference.

So, swapped the sensors over (fortunately I hadn't thrown the "bad" sensor away), re-adapted with VCDS and now all is well.

So, I spent a little over £300 pounds including parts, software etc. vs the £1000 I was quoted AND I get to use VCDS to satisfy my inner geek. I think it will be a good long term investment as we are a 2 Golf family and have no plans to change cars any time soon.

Thanks to Uwe and HMC above for you suggestions. Hope this write up helps someone else.

Hi,
thanks for the info.I got the same fault code. How much we have to pay to get the access to VW repair manuals in erWin ?

PetrolDave · Jul 6, 2022

Kejo said:
How much we have to pay to get the access to VW repair manuals in erWin ?

In the EU you only need to buy 1 hour access, which Google tells me will cost €7.00

Uwe · Jul 6, 2022

PetrolDave said:
In the EU you only need to buy 1 hour access,

So like a seedy hotel room?

-Uwe-

G450 DPF P2002 Fault

wycombephil

Verified VCDS User

Uwe

Benevolent Dictator

HMC

Verified VCDS User

wycombephil

Verified VCDS User

HMC

Verified VCDS User

wycombephil

Verified VCDS User

wycombephil

Verified VCDS User

wycombephil

Verified VCDS User

Uwe

Benevolent Dictator

Racediagnostics

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Kejo

Verified VCDS User

PetrolDave

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Uwe

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