Dpf issues

   #1  

H-bus guy

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Soot mass calculated before regen was 11.6g, 0.35g after, but soot mass measured was 24.6g before regen, 32.8g after?

Dpf differential pressure is 1hPa ignition on engine off, 41hPa at idle.
Offset is 1hPa.

Normal or not.

Had blocked pressure sensor pipe on dpf week ago..... sensor G450 was checked and ok then....
 
   #2  

Mike@Gendan

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First things first, please post a full Auto-Scan with the latest version of VCDS.
It'll show the details of the vehicle and add some context.
 
   #3  

H-bus guy

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Scan from last weekend, yes i know vcds needs an update, havd done tgst now

Saturday,07,September,2019,07:53:24:16358 VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x86 VCDS Version: 19.6.0.2 Data version: 20190529 DS308.0 www.Ross-Tech.com VIN: WV1ZZZ7HZBH070165 License Plate: ND60RJO Mileage: 275630km-171268mi Repair Order: -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Chassis Type: 7H-VN75 (6N0) Scan: 01 02 03 04 08 09 15 17 19 22 25 56 69 0B VIN: WV1ZZZ7HZBH070165 Mileage: 275630km-171268miles 01-Engine -- Status: Malfunction 0010 02-Auto Trans -- Status: OK 0000 03-ABS Brakes -- Status: OK 0000 04-Steering Angle -- Status: OK 0000 08-Auto HVAC -- Status: OK 0000 09-Cent. Elect. -- Status: Malfunction 0010 15-Airbags -- Status: OK 0000 17-Instruments -- Status: OK 0000 19-CAN Gateway -- Status: OK 0000 22-AWD -- Status: OK 0000 25-Immobilizer -- Status: OK 0000 56-Radio -- Status: OK 0000 69-Trailer -- Status: OK 0000 ------------------------------------------------------------------------------- Address 01: Engine (J623-CFCA) Labels:. 03L-906-022-CFC.clb Part No SW: 03L 906 022 JE HW: 03L 907 309 H Component: R4 2,0L EDC H34 9970 Revision: 22H34--- Serial number: 00000000000000 Coding: 01254012231600080000 Shop #: WSC 81903 210 00000 ASAM Dataset: EV_ECM20BTD01103L906022JE 002009 ROD: EV_ECM20BTD01103L906022JD_002.rod VCID: 71E9A2EDA096FCC76E-8024 1 Fault Found: 11895 - Turbo / Supercharger B P02CB 00 [101] - Pressure too Low Not Confirmed - Tested Since Memory Clear Freeze Frame: Fault Status: 00000001 Fault Priority: 2 Fault Frequency: 1 Mileage: 275624 km Date: 2019.09.06 Time: 13:40:49 Engine speed: 2638.00 /min Normed load value: 89.4 % Vehicle speed: 74 km/h Coolant temperature: 98 C Intake air temperature: 35 C Ambient air pressure: 1010 mbar Voltage terminal 30: 13.780 V Unlearning counter according OBD: 40 Charge air pressure specified value: 2532 hPa Charge air pressure: actual value: 2427.6 hPa Air mass: actual value (mg/stroke): 1033.6 mg/stroke Air cleaner degree of soiling: 18.27 % Throttle valve adapter: actual value: 64.50 % Bypass valve f high press turboch turbine inlet: actual value: 98.01 % Mean injection quantity: 52.89 mg/stroke Readiness: 0 0 0 0 0 ------------------------------------------------------------------------------- Address 02: Auto Trans (J743) Labels:. 0BH-927-711.clb Part No SW: 0BT 300 011 Q HW: 0BH 927 711 C Component: DSG DQ500-7A H08 2258 Revision: 00H08V01 Coding: 0014 Shop #: WSC 00000 000 00000 ASAM Dataset: EV_TCMDQ500021 001001 ROD: EV_TCMDQ500021_VW36.rod VCID: 3C7743D9B75441AF8D-8068 No fault code found. ------------------------------------------------------------------------------- Address 03: ABS Brakes (-----) Labels: 7E0-907-37x-MK25AXT.clb Part No SW: 7E0 907 379 G HW: 7E0 907 379 E Component: ESP MK25A XT H43 0105 Revision: 00H43001 Coding: 508764AD99AB0A9526A39977A96316 Shop #: WSC 02736 790 49152 VCID: 366351F181789BFF7B-8062 No fault code found. ------------------------------------------------------------------------------- Address 08: Auto HVAC (J301) Labels:| 7E5-907-047.clb Part No SW: 7E5 907 047 AL HW: 7E5 907 047 AL Component: Climatic-T5 H11 0203 Revision: 00005001 Coding: 0000000002 Shop #: WSC 02737 790 50316 ASAM Dataset: EV_ClimaticT5 A01003 ROD: EV_ClimaT5Basis.rod VCID: 79F99ACDF8E6B487D6-802C No fault code found. ------------------------------------------------------------------------------- Address 09: Cent. Elect. (J519) Labels:. 7H0-937-08x-09.clb Part No SW: 7H0 937 087 F HW: 7H0 937 087 Component: BCM T5GP H+4 H47 0230 Revision: BO047001 Serial number: 0396 321100593 Coding: A0A0393A0E212013002008102C2B8C540000430F60044000300000000000 Shop #: WSC 02734 790 00000 VCID: 377D5CF5867262F760-8062 Subsystem 1 - Part No SW: 7E0 959 801 C HW: 7E0 959 801 C Labels: 7E0-959-80X-V1.CLB Component: J386__TSG_FT 003 3311 Serial number: -------------------- Coding: 050000 Subsystem 2 - Part No SW: 7E0 959 802 C HW: 7E0 959 802 C Labels: 7E0-959-80X-V1.CLB Component: J387__TSG_BT 003 3311 Serial number: -------------------- Coding: 040000 1 Fault Found: 03303 - Response Closing Status of Rear Left Door 008 - Implausible Signal - Intermittent Freeze Frame: Fault Status: 00101000 Fault Priority: 2 Fault Frequency: 3 Reset counter: 27 Mileage: 275632 km Time Indication: 0 Date: 2014.01.27 Time: 21:28:05 ------------------------------------------------------------------------------- Address 15: Airbags (J234) Labels:| 5K0-959-655.clb Part No SW: 7E0 959 655 B HW: 7E0 959 655 B Component: VW10Airbag009 H06 0013 Revision: -------- Serial number: 003HL002H9WF Coding: 000000000000000000000000000000003039 Shop #: WSC 02734 790 50316 ASAM Dataset: EV_AirbaVW10BPAVN750 A01026 ROD: EV_AirbaVW10BPAVN750_VW12.rod VCID: 356156FD947E90E772-8060 No fault code found. ------------------------------------------------------------------------------- Address 17: Instruments (J285) Labels:| 5K0-920-xxx-17.clb-SRI1 Part No SW: 7E0 920 960 CX HW: 7E0 920 960 CX Component: KOMBI H04 0204 Serial number: 00000000000000 Coding: 460300 Shop #: WSC 51034 001 1048576 ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04086 ROD: EV_Kombi_UDS_VDD_RM09_004_VW32.rod VCID: 0109F22D9036EC479E-8054 No fault code found. ------------------------------------------------------------------------------- Address 19: CAN Gateway (J533) Labels:. 6N0-909-901-6R.clb Part No SW: 6N0 909 901 HW: 7H0 937 087 Component: GW-K-CAN TP20 0230 Coding: 042300 Shop #: WSC 02734 790 00000 VCID: 70EFA7E9A39CF5CF61-8024 No fault code found. ------------------------------------------------------------------------------- Address 22: AWD Labels: 0AY-907-554-V1.clb Part No SW: 09N 907 554 B HW: 09N 907 554 B Component: Haldex 4Motion 6008 Coding: 0000002 Shop #: WSC 02748 790 00000 VCID: 377D5CF5467262F760-8062 No fault code found. ------------------------------------------------------------------------------- Address 25: Immobilizer (J334) Labels:| 5K0-920-xxx-25.clb Part No SW: 5K0 953 234 HW: 5K0 953 234 Component: IMMO H04 0204 Serial number: 00000000000000 Coding: 000000 Shop #: WSC 00000 000 00000 ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03008 ROD: EV_Immo_UDS_VDD_RM09.rod VCID: 6ADBB5818D400F1F2F-803E No fault code found. ------------------------------------------------------------------------------- Address 56: Radio (J503) Labels:. 5M0-035-1xx-56.clb Part No SW: 5M0 035 186 AA HW: 5M0 035 186 AA Component: Radio RCD310 016 0049 Revision: 01000000 Serial number: VWZ1Z2K8556967 Coding: 0500020002 Shop #: WSC 02734 790 00000 VCID: 6BD5B0858ABA161754-803E No fault code found. ------------------------------------------------------------------------------- Address 69: Trailer (J345) Labels:. 1K0-907-383-V2.clb Part No SW: 1K0 907 383 F HW: 1K0 907 383 F Component: Anhaenger H09 0100 Revision: 3A001001 Serial number: 00000137824167 Coding: 410D000100000000 Shop #: WSC 02736 790 00000 VCID: 306F67E9631CB5CF21-8064 No fault code found. End-------------------------(Elapsed Time: 03:05)--------------------------
 
   #4  

grant@gendan

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A DPF won't normally regen if you have Engine fault codes. If you fix your engine fault, then the DPF should be able to regen and reduce the measured soot mass.
Otherwise, I suspect there is still a problem with the DPF pressure sensor and/or connection pipes.
 
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   #5  

Uwe

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The scan posted above is an illegible mess. I'm not sure what program(s) you passed that through that stripped the Newlines and white space. Let's see if we can make some sense of the ECU data:

Code:
Address 01: Engine (J623-CFCA) Labels:. 03L-906-022-CFC.clb 
    Part No SW: 03L 906 022 JE    HW: 03L 907 309 H 
    Component: R4 2,0L EDC H34 9970 Revision: 22H34--- 
    Serial number: 00000000000000 
    Coding: 01254012231600080000 
    Shop #: WSC 81903 210 00000 
    ASAM Dataset: EV_ECM20BTD01103L906022JE 002009 
    ROD: EV_ECM20BTD01103L906022JD_002.rod 
    VCID: 71E9A2EDA096FCC76E-8024 

1 Fault Found: 

11895 - Turbo / Supercharger B 
            P02CB 00 [101] - Pressure too Low Not Confirmed - Tested Since Memory Clear 
                Freeze Frame: 
                Fault Status: 00000001 
                Fault Priority: 2 
                Fault Frequency: 1 
                Mileage: 275624 km 
                Date: 2019.09.06 
                Time: 13:40:49 
                Engine speed: 2638.00 /min 
                Normed load value: 89.4 % 
                Vehicle speed: 74 km/h 
                Coolant temperature: 98 C 
                Intake air temperature: 35 C 
                Ambient air pressure: 1010 mbar 
                Voltage terminal 30: 13.780 V 
                Unlearning counter according OBD: 40 
                Charge air pressure specified value: 2532 hPa 
                Charge air pressure: actual value: 2427.6 hPa 
                Air mass: actual value (mg/stroke): 1033.6 mg/stroke 
                Air cleaner degree of soiling: 18.27 % 
                Throttle valve adapter: actual value: 64.50 %
                Bypass valve f high press turboch turbine inlet: actual value: 98.01 %
                Mean injection quantity: 52.89 mg/stroke 

Readiness: 0 0 0 0 0
41 hPa at idle strikes me as quite high.

-Uwe-

PS: Got the OP verified. Moving to Car Repair Support.
 
Last edited:
   #6  

H-bus guy

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P02CB00 fault code, limp mode

Transporter 2011, 2.0 biTdi 4motion CFCA engine. 171000 miles.

Had dpf light and coil light come on whilst driving to airport (150miles). Limp mode.

Had vw roadside assistance come out, ws blocked dpf filter ( and dpf pressure differential sensor pipe), turbo pressure too low. Fault codes p02cb00 and P246300.

He cleared pipe, tested G450 sensor, manual regen of dpf. Has new MAP sensor.

It cleared the dpf fault but the low boost still returns after about 1/2 a mile.

Full auto scan

Code:
Saturday,07,September,2019,07:53:24:16358
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x86
VCDS Version: 19.6.0.2
Data version: 20190529 DS308.0
www.Ross-Tech.com


VIN: WV1ZZZ7HZBH070165   License Plate: ND60RJO
Mileage: 275630km-171268mi   Repair Order: 



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


Chassis Type: 7H-VN75 (6N0)
Scan: 01 02 03 04 08 09 15 17 19 22 25 56 69 0B

VIN: WV1ZZZ7HZBH070165   Mileage: 275630km-171268miles

01-Engine -- Status: Malfunction 0010
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
15-Airbags -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
22-AWD -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
56-Radio -- Status: OK 0000
69-Trailer -- Status: OK 0000
 
-------------------------------------------------------------------------------
Address 01: Engine (J623-CFCA)       Labels:. 03L-906-022-CFC.clb
   Part No SW: 03L 906 022 JE    HW: 03L 907 309 H
   Component: R4 2,0L EDC   H34 9970  
   Revision: 22H34---    Serial number: 00000000000000
   Coding: 01254012231600080000
   Shop #: WSC 81903 210 00000
   ASAM Dataset: EV_ECM20BTD01103L906022JE 002009
   ROD: EV_ECM20BTD01103L906022JD_002.rod
   VCID: 71E9A2EDA096FCC76E-8024

1 Fault Found:
11895 - Turbo / Supercharger B 
          P02CB 00 [101] - Pressure too Low
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 275624 km
                    Date: 2019.09.06
                    Time: 13:40:49

                    Engine speed: 2638.00 /min
                    Normed load value: 89.4 %
                    Vehicle speed: 74 km/h
                    Coolant temperature: 98 C
                    Intake air temperature: 35 C
                    Ambient air pressure: 1010 mbar
                    Voltage terminal 30: 13.780 V
                    Unlearning counter according OBD: 40
                    Charge air pressure specified value: 2532 hPa
                    Charge air pressure: actual value: 2427.6 hPa
                    Air mass: actual value (mg/stroke): 1033.6 mg/stroke
                    Air cleaner degree of soiling: 18.27 %
                    Throttle valve adapter: actual value: 64.50 %
                    Bypass valve f high press turboch turbine inlet: actual value: 98.01 %
                    Mean injection quantity: 52.89 mg/stroke

Readiness: 0 0 0 0 0 

-------------------------------------------------------------------------------
Address 02: Auto Trans (J743)       Labels:. 0BH-927-711.clb
   Part No SW: 0BT 300 011 Q    HW: 0BH 927 711 C
   Component: DSG DQ500-7A  H08 2258  
   Revision: 00H08V01    
   Coding: 0014
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_TCMDQ500021 001001
   ROD: EV_TCMDQ500021_VW36.rod
   VCID: 3C7743D9B75441AF8D-8068

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes (-----)       Labels: 7E0-907-37x-MK25AXT.clb
   Part No SW: 7E0 907 379 G    HW: 7E0 907 379 E
   Component: ESP MK25A XT  H43 0105  
   Revision: 00H43001    
   Coding: 508764AD99AB0A9526A39977A96316
   Shop #: WSC 02736 790 49152
   VCID: 366351F181789BFF7B-8062

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J301)       Labels:| 7E5-907-047.clb
   Part No SW: 7E5 907 047 AL    HW: 7E5 907 047 AL
   Component: Climatic-T5   H11 0203  
   Revision: 00005001    
   Coding: 0000000002
   Shop #: WSC 02737 790 50316
   ASAM Dataset: EV_ClimaticT5 A01003
   ROD: EV_ClimaT5Basis.rod
   VCID: 79F99ACDF8E6B487D6-802C

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 7H0-937-08x-09.clb
   Part No SW: 7H0 937 087 F    HW: 7H0 937 087 
   Component: BCM T5GP H+4  H47 0230  
   Revision: BO047001    Serial number: 0396 321100593
   Coding: A0A0393A0E212013002008102C2B8C540000430F60044000300000000000
   Shop #: WSC 02734 790 00000
   VCID: 377D5CF5867262F760-8062

   Subsystem 1 - Part No SW: 7E0 959 801 C    HW: 7E0 959 801 C  Labels: 7E0-959-80X-V1.CLB
   Component: J386__TSG_FT  003 3311 
   Serial number: --------------------
   Coding: 050000

   Subsystem 2 - Part No SW: 7E0 959 802 C    HW: 7E0 959 802 C  Labels: 7E0-959-80X-V1.CLB
   Component: J387__TSG_BT  003 3311 
   Serial number: --------------------
   Coding: 040000

1 Fault Found:
03303 - Response Closing Status of Rear Left Door 
            008 - Implausible Signal - Intermittent
             Freeze Frame:
                    Fault Status: 00101000
                    Fault Priority: 2
                    Fault Frequency: 3
                    Reset counter: 27
                    Mileage: 275632 km
                    Time Indication: 0
                    Date: 2014.01.27
                    Time: 21:28:05


-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
   Part No SW: 7E0 959 655 B    HW: 7E0 959 655 B
   Component: VW10Airbag009 H06 0013  
   Revision: --------    Serial number: 003HL002H9WF
   Coding: 000000000000000000000000000000003039
   Shop #: WSC 02734 790 50316
   ASAM Dataset: EV_AirbaVW10BPAVN750 A01026
   ROD: EV_AirbaVW10BPAVN750_VW12.rod
   VCID: 356156FD947E90E772-8060

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5K0-920-xxx-17.clb-SRI1
   Part No SW: 7E0 920 960 CX    HW: 7E0 920 960 CX
   Component: KOMBI         H04 0204  
   Serial number: 00000000000000
   Coding: 460300
   Shop #: WSC 51034 001 1048576
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04086
   ROD: EV_Kombi_UDS_VDD_RM09_004_VW32.rod
   VCID: 0109F22D9036EC479E-8054

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 6N0-909-901-6R.clb
   Part No SW: 6N0 909 901     HW: 7H0 937 087 
   Component: GW-K-CAN TP20 0230  
   Coding: 042300
   Shop #: WSC 02734 790 00000
   VCID: 70EFA7E9A39CF5CF61-8024

No fault code found.

-------------------------------------------------------------------------------
Address 22: AWD        Labels: 0AY-907-554-V1.clb
   Part No SW: 09N 907 554 B    HW: 09N 907 554 B
   Component: Haldex 4Motion      6008  
   Coding: 0000002
   Shop #: WSC 02748 790 00000
   VCID: 377D5CF5467262F760-8062

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer (J334)       Labels:| 5K0-920-xxx-25.clb
   Part No SW: 5K0 953 234     HW: 5K0 953 234 
   Component: IMMO          H04 0204  
   Serial number: 00000000000000
   Coding: 000000
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03008
   ROD: EV_Immo_UDS_VDD_RM09.rod
   VCID: 6ADBB5818D400F1F2F-803E

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (J503)       Labels:. 5M0-035-1xx-56.clb
   Part No SW: 5M0 035 186 AA    HW: 5M0 035 186 AA
   Component: Radio RCD310  016 0049  
   Revision: 01000000    Serial number: VWZ1Z2K8556967
   Coding: 0500020002
   Shop #: WSC 02734 790 00000
   VCID: 6BD5B0858ABA161754-803E

No fault code found.

-------------------------------------------------------------------------------
Address 69: Trailer (J345)       Labels:. 1K0-907-383-V2.clb
   Part No SW: 1K0 907 383 F    HW: 1K0 907 383 F
   Component: Anhaenger     H09 0100  
   Revision: 3A001001    Serial number: 00000137824167
   Coding: 410D000100000000
   Shop #: WSC 02736 790 00000
   VCID: 306F67E9631CB5CF21-8064

No fault code found.

End-------------------------(Elapsed Time: 03:05)--------------------------
scan of fault code

Code:
Saturday,07,September,2019,12:45:54:16358
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x86
VCDS Version: 19.6.0.2
Data version: 20190529 DS308.0
www.Ross-Tech.com


VIN: WV1ZZZ7HZBH070165   License Plate: ND60RJO


                Address 01: Engine       Labels: 03L-906-022-CFC.clb
Control Module Part Number: 03L 906 022 JE    HW: 03L 907 309 H
  Component and/or Version: R4 2,0L EDC   H34 9970
           Software Coding: 01254012231600080000
            Work Shop Code: WSC 81903 210 00000
              ASAM Dataset: EV_ECM20BTD01103L906022JE 002009 (VN75)
                       ROD: EV_ECM20BTD01103L906022JD_002.rod
                      VCID: 71E9A2EDA096FCC76E-8024
1 Fault Found:

11895 - Turbo / Supercharger B 
          P02CB 00 [167] - Pressure too Low
          MIL ON - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 275633 km
                    Date: 2019.09.07
                    Time: 11:11:59

                    Engine speed: 2601.50 /min
                    Normed load value: 77.6 %
                    Vehicle speed: 67 km/h
                    Coolant temperature: 51 C
                    Intake air temperature: 31 C
                    Ambient air pressure: 1010 mbar
                    Voltage terminal 30: 14.180 V
                    Unlearning counter according OBD: 40
                    Charge air pressure specified value: 2625 hPa
                    Charge air pressure: actual value: 2363.2 hPa
                    Air mass: actual value (mg/stroke): 1044.7 mg/stroke
                    Air cleaner degree of soiling: 18.08 %
                    Throttle valve adapter: actual value: 99.62 %
                    Bypass valve f high press turboch turbine inlet: actual value: 99.08 %
                    Mean injection quantity: 44.33 mg/stroke


Readiness: N/A
Was thinking it could be clogged up wastegate with soot or issue with wastegate actuator?

I have checked both actuators move from end to end/hold a vacuum using hand vacuum pump.

Whats your thinkings?
 
   #7  

H-bus guy

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I have since updated vcds software to latest version.
 
   #8  

H-bus guy

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Sorry for the messy scan, had copied and pasted from my other thread as using phone and scan was saved on laptop.
 
   #9  

H-bus guy

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A DPF won't normally regen if you have Engine fault codes. If you fix your engine fault, then the DPF should be able to regen and reduce the measured soot mass.
Otherwise, I suspect there is still a problem with the DPF pressure sensor and/or connection pipes.
Having problems finding the cause of the turbocharger 'b' boost pressure too low fault code. Any ideas?

Is there anyway to test the dpf pressure sensor G450? Volkswagen did test it last week and seemed ok???

Will recheck pipework to sensor for blockages/soot build up again.
 
   #10  

PetrolDave

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Is there anyway to test the dpf pressure sensor G450? Volkswagen did test it last week and seemed ok??
How did they test it, did they apply pressure and check for valid readings?
 
   #12  

H-bus guy

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How did they test it, did they apply pressure and check for valid readings?
It was Volkswagen roadside assistance , have no idea how he did it, he tried new sensor too......
 
   #13  

H-bus guy

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Yes, similar in new users before i was verified. Sorry for any confusion.

Just pulling hair out......
 
   #14  

Uwe

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Threads merged. Please do not open multiple threads for the same problem in the same car.

-Uwe-
 
   #15  

Gremling

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Hi,
with regards to low turbo pressure. The way I read scan, the engine (ECU) wants 2.65bar, it gets 2,36, a difference in 0,3bars, hmmm.
(Hectopascal / 1000 = bar -> hectopascal = millibars).

Car has 275633km, and I also recon a bit idling, might be time for a turbo overhaul. Just out of curiosity, what is your time between service (oil change)?
Please also note that the intake filter has an estimated soiling of above 18%, dirty/clogged filter will cause air starvation, hence lower pressure.

If not done so recently, change to new air filter, new high quality oil and oil filter, might be worth to try this before starting to change more parts.

Regards
Gremling
 
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   #16  

H-bus guy

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Hi,
with regards to low turbo pressure. The way I read scan, the engine (ECU) wants 2.65bar, it gets 2,36, a difference in 0,3bars, hmmm.
(Hectopascal / 1000 = bar -> hectopascal = millibars).

Car has 275633km, and I also recon a bit idling, might be time for a turbo overhaul. Just out of curiosity, what is your time between service (oil change)?
Please also note that the intake filter has an estimated soiling of above 18%, dirty/clogged filter will cause air starvation, hence lower pressure.

If not done so recently, change to new air filter, new high quality oil and oil filter, might be worth to try this before starting to change more parts.

Regards
Gremling
Oil changes are done every 4-6months, as i only do approx 8000miles/12000km per year, mostly urban / town driving, short journeys.

air filter is a re-usable K&N style type. Will check and clean as per instructions.

Has had a complete new bi-turbo unit (not sure when, was previous owner) can look when it was tonight as have all repair receipts etc.

Found SSP45 online which gives a very indepth explanation of the biturbo system and the 3 stages of twin turbo system.
 
   #17  

H-bus guy

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New turbos and new dpf filter in January 2016 @ 116000 miles/185600 kms.
 
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Gremling

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Last oil-, oilfilter and air filter change?

Regards
Gremling
 
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H-bus guy

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I have now noticed that my coolant expansion bottle is losing coolant, drops from maximum line to minimum line in 24hrs (20miles). No obvious signs of external leaks. No overheating of engine.

Could this be a leaking egr cooler?
Would this create the low turbo boost pressure fault?
Would this create the dpf clogging issue i had?

Egr was replaced in august 2016 for the 'D' suffix version as the earlier 'A -C' versions were at fault of breaking down internally.
 
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