2013 Passat TDI Low Fuel Pressure

   #1  

passdattdi

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As per suggestion, I'm starting from scratch from previous thread. I got car back and did autoscan. I will start by checking at lift pump and work upwards from there. On previous thread mentioned DPF Regen frequency fault which has not re-appeared. I did add a dpf cleaner additive and not sure if that did the trick but for the last month or so that code has not retrned. UNfortunately, there is now an EGR code. Last thing that was done was a fuel injector replacement that had higher than normal return. The new injector seems to have solved high return issue, but this EGR code popped up and still low fuel pressure.

Code:
Wednesday,04,September,2024,11:18:32:01454
VCDS Version: Release 24.7.0 (x64) Running on Windows 11 x64
www.Ross-Tech.com

                Address 01: Engine       Labels: 03L-906-022-CFC.clb
Control Module Part Number: 03L 997 009 J    HW: 03L 907 309 S
  Component and/or Version: R4 2.0l TDI   H23 9982
           Software Coding: 001D0012042400000000
            Work Shop Code: WSC 22194 444 00000
              ASAM Dataset: EV_ECM20TDI01103L997009J 004005 (VW41)
                       ROD: EV_ECM20TDI01103L997009J.rod
                      VCID: 3B233CC303E5FA324A1-806E
4 Faults Found:

5211 - Fuel Rail/System Pressure
          P0087 00 [10100111] - Too Low
          MIL ON - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 224081 km
                    Date: 2127.14.31
                    Time: 23:00:43

                    Engine RPM: 1783.50 /min
                    Normed load value: 62.7 %
                    Vehicle speed: 58 km/h
                    Coolant temperature: 101 °C
                    Intake air temperature: 46 °C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 14.060 V
                    Unlearning counter according OBD: 80
                    Fuel temperature: 47.2 °C
                    Mean injection quantity: 28.64 mg/stroke
                    Rail pressure regulation: status-Bits 0-7: 5
                    Fuel high-pressure: actual value: 1438200 hPa
                    High fuel pressure: specified value: 1640200 hPa
                    Pressure control valve adaptation factor: 1.2196
                    Fuel level: 51.00 l

5212 - Fuel Rail/System Pressure
          P0087 00 [10100111] - Too Low
          MIL ON - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 224081 km
                    Date: 2127.14.31
                    Time: 23:00:51

                    Engine RPM: 1942.50 /min
                    Normed load value: 99.6 %
                    Vehicle speed: 63 km/h
                    Coolant temperature: 102 °C
                    Intake air temperature: 46 °C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 14.100 V
                    Unlearning counter according OBD: 40
                    Fuel temperature: 48.7 °C
                    Mean injection quantity: 22.67 mg/stroke
                    Rail pressure regulation: status-Bits 0-7: 5
                    Fuel high-pressure: actual value: 1435700 hPa
                    High fuel pressure: specified value: 1591000 hPa
                    Pressure control valve adaptation factor: 1.2196
                    Fuel level: 51.00 l

4881 - EGR Valve (N18)
          P1440 00 [00100111] - Open Circuit
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 224079 km
                    Date: 2127.14.31
                    Time: 22:55:20

                    Engine RPM: 831.00 /min
                    Normed load value: 26.3 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 98 °C
                    Intake air temperature: 47 °C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 13.880 V
                    Unlearning counter according OBD: 40
                    Air mass: actual value (mg/stroke): 486.3 mg/stroke
                    EGR Vacuum Regulator Solen.val.: activation: 100.00 %
                    EGR Solen.val.: actual value: 100.00 %
                    EGR valve: offset closed: 0.00 %
                    Actuator for high pressure EGR: status-Bits 0-7: 55
                    Actuator for high pressure EGR: status-Bits 0-7: 3
                    Actuator for high pressure EGR: status-Bits 0-7: 0
                    Actuator for high pressure EGR: status-Bits 0-7: 2
                    High press EGR actuator: actual unconditioned volt val: 1.8 mV

4900 - EGR Sensor 1
          P0405 00 [00100111] - Signal too Low
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 224079 km
                    Date: 2127.14.31
                    Time: 22:55:20

                    Engine RPM: 828.50 /min
                    Normed load value: 26.3 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 98 °C
                    Intake air temperature: 47 °C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 13.880 V
                    Unlearning counter according OBD: 40
                    Air mass: actual value (mg/stroke): 488.8 mg/stroke
                    EGR Vacuum Regulator Solen.val.: activation: 15.00 %
                    EGR Solen.val.: actual value: 100.00 %
                    EGR valve: offset closed: 0.00 %
                    Actuator for high pressure EGR: status-Bits 0-7: 55
                    Actuator for high pressure EGR: status-Bits 0-7: 3
                    Actuator for high pressure EGR: status-Bits 0-7: 0
                    Actuator for high pressure EGR: status-Bits 0-7: 2
                    High press EGR actuator: actual unconditioned volt val: 2.8 mV


Readiness: 0 0 0 1 1
 
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   #2  

Dr Sheldon

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5212 - Fuel Rail/System Pressure
P0087 00 [10100111] - Too Low
MIL ON - Not Confirmed - Tested Since Memory Clear
Freeze Frame:


Engine RPM: 1942.50 /min

Fuel high-pressure: actual value: 1435700 hPa
High fuel pressure: specified value: 1591000 hPa

P0087 - Seems to pop a lot lately !!

I will start by checking at lift pump and work upwards from there.
That is the correct starting point !

Measure Pressure and flow (Litres per minute) after the fuel filter - lets see what we got ??
 
   #3  

passdattdi

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Fuel pressure psi after fuel filter getting around 63-64 psi. I believe spec is 65 psi. Don't think that is signifficant ? Fuel delivery rate i got just under 2.5 litres. The manual says check for 30 seconds running delivery pump but i let it go for the minute . I tried with both vcds running the pump and also turned car on and got pretty much same results. These tests are of course being done with car parked. I went for drive with codes cleared. After about 10 miles, glow plug symbol flashing again. Kept driving steady about 55-60 mph (wont go faster) and within another 4-5 miles engine stopped. Pulled codes and besides regular ones i got another code pointing to throttle valve control module j338. My computer acting up and will be getting new one but can't get to the code right now. Anyway, not sure if this means something but I will continue with testing procedures.
 
   #4  

passdattdi

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Just got back to working on car again. Retested lift pump again where I left off. Psi before and after filter I got 70 psi. Fuel delivery rate rate I got 60 oz before and after filter. This is about 1.5 liters per 30 seconds. I prefer to work with ounces. Specs per Erwin manual call for about 37 ounces (converted from cu inches) delivery rate. That cannot be right. A friend had a lift pump in new condition and we put it on. The tests were exactly the same outcome. Needless to say, I think the lift pump is working fine. Fuel filter and lines are fine. Are there fuel return valves, check valves or something I can check , or something else I can check before moving on to high side pressure system?
 
   #5  

Dr Sheldon

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Specs per Erwin manual call for about 37 ounces (converted from cu inches) delivery rate. That cannot be right.

Then challenge VAG and please get Erwin Corrected !!
Are there fuel return valves, check valves or something I can check , or something else I can check before moving on to high side pressure system?
Erwin is your resource for that - There may be a SSP
 
   #6  

passdattdi

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So as I'm preparing to continue to troubleshooting I not ice fuel pressure regulator valve leaking. Pulled it off and found o ring to be broken. Ordered on ring and in the meantime I took off rail to give it a good look and good d clean. I did not notice anything abnormal on it. Sprayed ports with parts cleaner, made sure no instructions, all clean. Received o ring and put everything back. Symptoms are different now:
I get the flashing glow plug and P0087 almost immediately, literally just driving across the street. Before as long as keep car under 50mph I could drive all day long with no limp mode. Also getting the P0191 fuel rail pressure sensor A circuit , range/performance fault code. I was not getting this before. Sometimes also get the Fuel Pressure Regulator B , control circuit open. This one does not always come back though after erasing.

All that was done was replaced o ring on the regulator. The regulator was not leaking before but the oring did look pretty thin compared to new one. Ideas,. suggestions ? Can o ring replacement cause all thes?

I don't have a scan since something going on with vcds and need to contact them tomorrow. I am not able to access functions . Getting something about Rod File Error, unable to communicate with ecu.

So in meantime I did the fuel injectors return test. I see the numbers 3,2,and 1 returning more than the number 4. You think these differences are significant?
 
   #8  

Uwe

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You think these differences are significant?
Looks pretty significant to me! But I have no idea what the specs on that test are.

-Uwe-
 
   #9  

passdattdi

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Got new injector loaners. Did injector return test and was much less. Thought this would be the fix but no dice. Getting limp mode right away with usual p0087. I also did the test at the rail return as per Erwin manual. Got about 175 ml. Erwin specs is 90-110 ml in 30 seconds, and if not in range then likely a faulty fuel pressure regulator. But I had just replaced it. Checked fuel pressure sensor voltage and it's at 5.3 volts. Erwin specs says ~5 volts. Erwin says if voltage is good, check the ECU for some parameters. My ECU is bolted up shut with rivets so some what impractical to test that down. Not sure what else from here other than new HPFP. Will post auto scan shortly.
 
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   #10  

passdattdi

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Code:
Monday,03,February,2025,17:48:08:01454
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 11 x64
VCDS Version: 24.7.1.0 (x64)  HEX-V2 CB: 0.4643.4
Data version: 20240919 DS356.3
www.Ross-Tech.com


VIN: 1VWBN7A32DC076445   License Plate:
Mileage: 224720km-139634mi   Repair Order:



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


Chassis Type: A3-VW41 (7N0)
Scan: 01 02 03 08 09 15 16 17 19 25 2E 37 42 44 46 4F 52 56 62 72
        

VIN: 1VWBN7A32DC076445   Mileage: 224720km-139634miles

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: Malfunction 0010
25-Immobilizer -- Status: OK 0000
2E-Media Player 3 -- Status: OK 0000
37-Navigation -- Status: Malfunction 0010
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
-------------------------------------------------------------------------------
Address 01: Engine (J623-CKRA)       Labels:. 03L-906-022-CFC.clb
   Part No SW: 03L 997 009 J    HW: 03L 907 309 S
   Component: R4 2.0l TDI   H23 9982 
   Revision: 71H23---    Serial number:                CVN: D240C61F5C3E0D04
   Coding: 001D0012042400000000
   Shop #: WSC 22194 444 00000
   ASAM Dataset: EV_ECM20TDI01103L997009J 004005
   ROD: EV_ECM20TDI01103L997009J.rod
   VCID: 3B233CC303E5FA324A9-806E
   VINID: 0669D27874430944C01C6104147C1ACF14

2 Faults Found:
5211 - Fuel Rail/System Pressure
          P0087 00 [01100101] - Too Low
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 224720 km
                    Date: 2025.02.03.
                    Time: 06:45:23

                    Engine RPM: 1471.50 /min
                    Normed load value: 40.4 %
                    Vehicle speed: 13 km/h
                    Coolant temperature: 73  C
                    Intake air temperature: 41  C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 14.200 V
                    Unlearning counter according OBD: 80
                    Fuel temperature: 32.8  C
                    Mean injection quantity: 11.43 mg/stroke
                    Rail pressure regulation: status-Bits 0-7: 5
                    Fuel high-pressure: actual value: 766700 hPa
                    High fuel pressure: specified value: 1173100 hPa
                    Pressure control valve adaptation factor: 0.8300
                    Fuel level: 67.00 l

8785 - Fuel Pressure Sensor (G247)
          P0191 00 [01100101] - Implausible Signal
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 224720 km
                    Date: 2025.02.03.
                    Time: 06:45:21

                    Engine RPM: 1282.50 /min
                    Normed load value: 75.3 %
                    Vehicle speed: 9 km/h
                    Coolant temperature: 72  C
                    Intake air temperature: 41  C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 14.200 V
                    Unlearning counter according OBD: 40
                    Engine status: COENG_RUNNING
                    Engine status-Test_Program_Co Eng st COMPU VERB UBYTE: 3

Readiness: 0 0 0 0 1

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: 02E-927-770.clb
   Part No SW: 02E 300 058 M    HW: 02E 927 770 AL
   Component: GSG DSG AG6     512 9436 
   Revision: 05551213    Serial number: 00001209182057
   Coding: 0000020
   Shop #: WSC 09003 957 00200
   VCID: 2411E7BF92DBA5CA1B3-8070

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 1K0-907-379-60EC1F.clb
   Part No SW: 1K0 907 379 BL    HW: 1K0 907 379 BL
   Component: ESP MK60EC1   H31 0152 
   Revision: 00H31001   
   Coding: C54BC0F549290000A30F03E8921E0042A71000
   Shop #: WSC 09003 957 00200
   VCID: 7DA7F2DB5DF1340234D-8028

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: 14
                    Mileage: 224687 km
                    Time Indication: 0
                    Date: 2019.06.27.
                    Time: 00:18:20

             Freeze Frame:
                    Count: 2
                    Count: 12
                    Count: 4096
                    Count: 16390
                    Count: 45568
                    Count: 1
                    Count: 252
                    Count: 0


-------------------------------------------------------------------------------
Address 08: Auto HVAC (J301)       Labels:| 3C8-907-336.clb
   Part No SW: 561 907 426 A    HW: 561 907 426 A
   Component: AC Manuell    H02 0101 
   Revision: 00001K07   
   Coding: 0010001002
   Shop #: WSC 09003 957 00200
   ASAM Dataset: EV_ACManuaElectGen2BHTC 001002
   ROD: EV_ACManuaElectGen2BHTC_VW36.rod
   VCID: 196FC64BA919E822B85-804C

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect.
Cannot be reached
Unable to communicate with address 09. Are you sure the doors are unlocked?

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 5K0-959-655.clb
   Part No SW: 5C0 959 655     HW: 5C0 959 655
   Component: AirbagVW10G   013 0809 
   Serial number: 003ENM056M09   Dataset Number: 560003v__A_ 0049
   Coding: 00003548
   Shop #: WSC 09003 957 00200
   ASAM Dataset: EV_AirbaVW10SMEVW360 A01024
   ROD: EV_AirbaVW10SMEVW360.rod
   VCID: 6FBBD893071D5692B61-803A

   Seat occupied recognition:
   Subsystem 1 - Part No SW: 5C6 959 339 B    HW: 5C6 959 339 B
   Component: BF-Gewichtss.  H10 0046
   Serial number: 6940000Y120000LZBM0G
   Coding: 303044

   Crash sensor for side airbag: driver side:
   Subsystem 2 - Part No SW: 5K0 959 354     HW: 5K0 959 354
   Component: S.Sens.Fahr.V  H02 ----
   Serial number: 3572MSME30653173ZZZL

   Front Passenger's Side Airbag Crash Sensor:
   Subsystem 3 - Part No SW: 5K0 959 354     HW: 5K0 959 354
   Component: S.Sens.Beif.V  H02 ----
   Serial number: 3582MSME605A6273ZZZX

   Rear Side Airbag Crash Sensor (on driver's side):
   Subsystem 4 - Part No SW: 5K0 959 351 A    HW: 5K0 959 351 A
   Component: S.Sens.Fahr.H  H02 ----
   Serial number: 3516KSME166B2520ZZZM

   Passenger side rear thorax airbag crash sensor:
   Subsystem 5 - Part No SW: 5K0 959 351 A    HW: 5K0 959 351 A
   Component: S.Sens.Beif.H  H02 ----
   Serial number: 3526KSME323B0B20ZZZM

   Crash sensor for front airbag: driver side:
   Subsystem 6 - Part No SW: 5K0 959 659 A    HW: 5K0 959 659 A
   Component: F.Sens.Fahr  H02 ----
   Serial number: 3556LSME64056E1EZZZ1

   Crash sensor for front airbag: front passenger side:
   Subsystem 7 - Part No SW: 5K0 959 659 A    HW: 5K0 959 659 A
   Component: F.Sens.Beif  H02 ----
   Serial number: 3566LSME261A761EZZZ%

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:| 5K0-953-569.clb
   Part No SW: 1K5 953 521 AK    HW: 5K0 953 569 B
   Component: LENKS.MODUL   014 0140 
   Revision: FF010041    Serial number: 20121001302345
   Coding: 088A140000
   Shop #: WSC 09003 957 00200
   ASAM Dataset: EV_SMLSNGVOLWSXS A01004
   ROD: EV_SMLSNGVOLWS.rod
   VCID: 76B5EDF77847675A757-8022

   Multifunction steering wheel control module:
   Subsystem 1 - Part No SW: 3C8 959 537 D    HW: 3C8 959 537 D  Labels: 3C8-959-537.CLB
   Component: E221__MFL-YVJ  H07 0022
   Coding: E20000

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 5K0-920-XXX-17.clb-SRI1
   Part No SW: 561 920 970 E    HW: 561 920 970 E
   Component: KOMBI         H07 0705 
   Serial number: 00000000000000
   Coding: 231E01
   Shop #: WSC 09003 957 00200
   ASAM Dataset: EV_Kombi_UDS_VDD_RM09 A04716
   ROD: EV_Kombi_UDS_VDD_RM09_004_VW32.rod
   VCID: 1C61DF5FA62B9D0AA33-8048

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 7N0-907-530-V2.clb
   Part No SW: 7N0 907 530 AH    HW: 7N0 907 530 AH
   Component: J533  Gateway H50 1634 
   Revision:   H50       Serial number: 10111203290546
   Coding: 461000
   Shop #: WSC 09003 957 00200
   VCID: 76B5EDF778C7675A757-8022

1 Fault Found:
01305 - Databus for Infotainment
            004 - No Signal/Communication - Intermittent
             Freeze Frame:
                    Fault Status: 00100100
                    Fault Priority: 1
                    Fault Frequency: 1
                    Reset counter: 13
                    Mileage: 224686 km
                    Time Indication: 0
                    Date: 2019.06.27.
                    Time: 02:52:44


-------------------------------------------------------------------------------
Address 25: Immobilizer (J334)       Labels:| 5K0-920-xxx-25.clb
   Part No SW: 5K0 953 234     HW: 5K0 953 234
   Component: IMMO          H07 0705 
   Serial number:               
   Coding: 000000
   Shop #: WSC 09003 957 00200
   ASAM Dataset: EV_Immo_UDS_VDD_RM09 A03709
   ROD: EV_Immo_UDS_VDD_RM09_VW23.rod
   VCID: 6A8DC9873CFFB3BAE1F-803E

No fault code found.

-------------------------------------------------------------------------------
Address 2E: Media Player 3 (J650)       Labels:. 5N0-035-342.lbl
   Part No SW: 5N0 035 342 F    HW: 5N0 035 342 F
   Component: SG EXT.PLAYER H18 0546 
   Revision: A1001003    Serial number: 7663363842   
   Coding: 020100
   Shop #: WSC 09003 957 00200
   VCID: 2A0D0987FCFF73BA21F-807E

No fault code found.

-------------------------------------------------------------------------------
Address 37: Navigation (J794)       Labels:| 1K0-035-27x-37.clb
   Part No SW: 1K0 035 274 D    HW: 1K0 035 274 D
   Component: RNS315-NAR    H35 0319 
   Serial number: VWZAZ2M4239743
   Coding: 0400040104000B000000100A
   Shop #: WSC 09003 957 00200
   ASAM Dataset: EV_RNS315NARV2UDS 001705
   ROD: EV_RNS315NARV2UDS_VW32.rod
   VCID: 2517FABB95615CC20CD-8070

   Data carrier:
   Subsystem 1 - Part No: 3AA 919 866 B
   Component: NAR_V3_(0037)  0037

1 Fault Found:
1048642 - Internal Control Module Memory Check Sum Error
          B2000 42 [00001001] - General Memory Failure
          [ECU defect data memory failure]
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 4
                    Fault Frequency: 1
                    Mileage: 146115 km
                    Date: 2021.08.26.
                    Time: 22:27:47


-------------------------------------------------------------------------------
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 0525 
   Revision: 13110009    Serial number: 0005720211
   Coding: 0404F5
   Shop #: WSC 09003 957 00200
   ASAM Dataset: EV_TSGFPQ25BRFVW46X A04001
   ROD: EV_TSGFPQ25BRFVW46X.rod
   VCID: 5BE39C43E3A5DA326A9-800E

   Slave Driver:
   Subsystem 1 - Part No SW: 561 959 811     HW: 561 959 811   Labels: 1K0-959-70X-GEN4.CLB
   Component: J388__TSG_HL  004 4472
   Serial number: --------------------
   Coding: 800000

1 Fault Found:
131584 - Motor for Rear Window Regulator
          B11EE 54 [00001001] - Missing Calibration / Basic Setting
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 7
                    Fault Frequency: 1
                    Reset counter: 228
                    Mileage: 224681 km
                    Date: 2025.02.03.
                    Time: 00:15:54


-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
   Part No: 1K0 909 144 P
   Component: EPS_ZFLS Kl. 290    3305 
   Revision: 00H22000   
   Shop #: WSC 01357 011 00200
   VCID: 372B20F3334DDE52AE1-8062

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.
Cannot be reached

-------------------------------------------------------------------------------
Address 4F: Centr. Electr. II (J520)       Labels:. 1K0-907-532.clb
   Part No SW: 7N0 907 532     HW: 7N0 907 530 AH
   Component: EZE_2         H50 1634 
   Revision:   H50       Serial number: 10111203290546
   Coding: 01030108
   Shop #: WSC 09003 957 00200
   VCID: 6FBBD893079D5692B61-803A

   Subsystem 1 - Part No SW: 561 959 591     HW: 561 959 591
   Component: J245 P05 FFD7  H07 0004
   Serial number: 53388786011223200119
   Coding: 181100

   Subsystem 2 - Part No SW: 561 919 204 B    HW: 561 919 204 B
   Component: Analoguhr  008 0005

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 0525 
   Revision: 15110009    Serial number: 0005690344
   Coding: 0404F4
   Shop #: WSC 09003 957 00200
   ASAM Dataset: EV_TSGBPQ25BRFVW46X A04001
   ROD: EV_TSGBPQ25BRFVW46X.rod
   VCID: 5CE19F5FE6ABDD0A633-8008

   Slave Passenger:
   Subsystem 1 - Part No SW: 561 959 812     HW: 561 959 812   Labels: 1K0-959-70X-GEN4.CLB
   Component: J389__TSG_HR  004 4472
   Serial number: --------------------
   Coding: 800000

1 Fault Found:
131584 - Motor for Rear Window Regulator
          B11EE 54 [00001001] - Missing Calibration / Basic Setting
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 7
                    Fault Frequency: 1
                    Reset counter: 228
                    Mileage: 224681 km
                    Date: 2025.02.03.
                    Time: 00:15:54


End------(Elapsed Time: 01:05, VBatt start/end: 12.8V/12.7V, udsna)--------
 

SaVAGeSoot

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Replace fuel filter.... it's the cheapest part to load into the parts cannon and cannot hurt anything.
It appears your issue is while driving.
Investigate injector deviations for clues.
Look at injector setpoints.
Log requested vs actual fuel pressure while driving.
Fuel high-pressure: actual value: 766700 hPa
High fuel pressure: specified value: 1173100 hPa
 

passdattdi

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Thought was mentioned, but the filter was replaced when trying new lift pump, Jan 24th. I did go ahead and sprayed the metering valve. Dried, wiped it reinstalled. Drove and tried to log the high pressure specified and actual. It only lasts about 25 seconds before goes into limp mode.

MarkerTIMELoc. IDE00188TIMELoc. IDE00201
STAMPFuel high-pressure: actual valueSTAMPHigh fuel pressure: specified value
hPahPa
0.05​
334400​
0.15​
337800​
0.27​
336800​
0.38​
337800​
0.49​
339300​
0.59​
338000​
0.71​
339300​
0.81​
338100​
0.92​
339300​
1.05​
338000​
1.17​
341700​
1.3​
338000​
1.42​
339300​
1.55​
338000​
1.67​
336800​
1.8​
338000​
1.92​
334400​
2.05​
337800​
2.18​
339300​
2.3​
337800​
2.43​
336800​
2.55​
338000​
2.68​
336800​
2.8​
337900​
2.93​
336800​
3.05​
338100​
3.17​
339300​
3.28​
338000​
3.41​
336800​
3.54​
338700​
3.65​
336800​
3.76​
341200​
3.89​
339300​
3.98​
337800​
4.09​
339300​
4.22​
338900​
4.35​
339300​
4.45​
342200​
4.58​
341700​
4.71​
340600​
4.83​
339300​
4.96​
341100​
5.08​
341700​
5.21​
336000​
5.33​
341700​
5.47​
340300​
5.59​
339300​
5.72​
343200​
5.85​
341700​
5.98​
344000​
6.09​
344100​
6.21​
344600​
6.33​
344100​
6.43​
344800​
6.55​
344100​
6.68​
344500​
6.8​
344100​
6.93​
344800​
7.05​
344100​
7.18​
344200​
7.3​
341700​
7.43​
344200​
7.55​
341700​
7.68​
343800​
7.8​
344100​
7.93​
344200​
8.05​
344100​
8.18​
343700​
8.3​
344100​
8.43​
343600​
8.55​
344100​
8.69​
343800​
8.83​
341700​
8.94​
343700​
9.07​
344100​
9.18​
343600​
9.3​
346600​
9.45​
343600​
9.57​
341700​
9.69​
343600​
9.79​
344100​
9.91​
343600​
10.01​
346600​
10.13​
343300​
10.23​
344100​
10.35​
343300​
10.46​
341700​
10.57​
343500​
10.68​
341700​
10.81​
343600​
10.91​
346600​
11.01​
343800​
11.13​
344100​
11.23​
344800​
11.36​
341700​
11.48​
362900​
11.6​
351500​
11.7​
416000​
11.83​
441800​
11.95​
483600​
12.08​
478500​
12.21​
514100​
12.33​
505300​
12.47​
526100​
12.58​
520000​
12.71​
510000​
12.83​
515100​
12.93​
496000​
13.05​
502900​
13.16​
477900​
13.27​
480900​
13.37​
449500​
13.49​
454100​
13.59​
408300​
13.71​
424800​
13.81​
387600​
13.94​
397900​
14.06​
375500​
14.18​
383300​
14.3​
371500​
14.45​
373400​
14.57​
364900​
14.7​
366100​
14.82​
362500​
14.95​
361200​
15.1​
360600​
15.24​
366100​
15.35​
402400​
15.46​
393100​
15.58​
429100​
15.68​
419900​
15.8​
467200​
15.91​
454100​
16.02​
499100​
16.12​
485800​
16.24​
501000​
16.35​
505300​
16.47​
532300​
16.59​
537100​
16.72​
530900​
16.84​
542000​
16.97​
548900​
17.09​
554200​
17.21​
534600​
17.33​
546900​
17.46​
527000​
17.58​
544500​
17.71​
538500​
17.83​
549400​
17.96​
532300​
18.08​
551800​
18.21​
545900​
18.34​
576100​
18.48​
584900​
18.59​
593200​
18.71​
607900​
18.83​
605400​
18.93​
589000​
19.05​
612800​
19.16​
615000​
19.27​
629900​
19.37​
625600​
19.49​
639700​
19.59​
633000​
19.71​
656800​
19.83​
643800​
19.96​
664100​
20.08​
645800​
20.21​
659200​
20.33​
644100​
20.46​
661600​
20.58​
649600​
20.71​
664100​
20.83​
649100​
20.94​
666500​
21.04​
659900​
21.16​
671400​
21.26​
673800​
21.38​
681200​
21.48​
681400​
21.59​
688600​
21.72​
714100​
21.84​
703200​
21.97​
735400​
22.09​
717800​
22.23​
749500​
22.35​
730000​
22.47​
753900​
22.6​
739700​
22.72​
780900​
22.85​
754400​
22.97​
792900​
23.1​
764100​
23.22​
805300​
23.35​
776400​
23.47​
813200​
23.59​
786200​
23.7​
819300​
23.81​
798400​
23.93​
837800​
24.05​
805700​
24.16​
855100​
24.27​
808200​
24.37​
859200​
24.49​
813100​
24.59​
864100​
24.7​
815500​
24.83​
881900​
24.94​
817900​
25.06​
916100​
25.19​
820400​
25.31​
934200​
25.44​
820400​
25.57​
1001800​
25.69​
822800​
25.82​
1078800​
25.94​
825300​
26.07​
1106400​
26.19​
827700​
26.32​
1106100​
26.44​
827700​
26.54​
960600​
26.66​
827700​
26.76​
1157800​
26.88​
830100​
26.98​
1154300​
27.1​
832600​
27.2​
879000​
27.32​
786200​
27.44​
488400​
27.54​
585900​
27.66​
490100​
27.76​
522400​
27.88​
483600​
27.98​
478500​
28.1​
479600​
28.2​
505300​
28.33​
471000​
28.45​
478500​
28.58​
462700​
Tuesday
4​
February
2025​
06:53:45:01454-VCID:3B233CC303E5FA324A9-806EVCDS Version: Release 24.7.1 (x64)Data version: 20240919 DS356.3
 
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SaVAGeSoot

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I'm suspecting you've damaged your CP4.... maybe chunks of the o-ring or other debris make it through?
You've verified low side supply, you've changed injectors, tested return flow... it's not making pressure!
Replace the pressure sensor with the hopes that it's reading wrong... after that, the pump is about the only thing that's left.
 

passdattdi

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O ring came out complete, just snapped. Checking fuel filter, metering valve, tiny screen on regulator, no debree.

Fuel pressure sensor has been replaced and tested at least for voltage at the harness, 5.3 volts. I agree, and HPFP on the way. Question: Some have suggested, and I'm not sure if they are talking about this same vehicle, to pinch the rail fuel return hose and force fuel pressure to build then test drive. If no low fuel pressure fault, then possibly faulty regulator. If still get low pressure, definitely the HPFP. My question is, this is a fuel return hose, and i believe the return here is routed back to fuel filter. Since it is only a return , I figured can't be under too much pressure, so i pinched a bit with car on and clamps began to give, so i stopped. Should this return be under that much pressure? Just want to be sure I don't have hoses criss/crossed somewhere. I have also tried finding vacuum leaks but everything seems sealed. But would a vacuum leak affect this fuel pressure on these vehicles?
 
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passdattdi

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Not sure if mentioned before, but i had once replaced HPFP, though it was used. Had same exact symptoms; too much coincidence..? . Hoping that the used pump was also bad and the new one coming will fix issue; bit nervous.
 

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Not sure if mentioned before, but i had once replaced HPFP, though it was used.
OMG.... more unknowns.

So let's start this story over, in chronological order, and tell the whole story.
If a HPFP went, then shrapnel went though the whole system. Was the FSM procedure followed when replacing the HPFP?
What caused the initial HPFP to fail? Misfuelling? Lack of maintenance? Crappy fuel quality? All of the above?
 

passdattdi

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When it started limp mode and low fuel rail pressure there was no shrapnel and still no shrapnel. Still checked fuel filter, housing, oil, n290 for glitter. Have checked rail, fuel lines for it also. Nothing.

The only thing on the list is crappy gas.

Before trying a different HPFP, the fuel filter, in tank pump, metering valve, regulator and fps had been checked/replaced. This left only HPFP left , (besides fuel injectors). However, because of the high cost, I decide to try one from eBay; USED. The used pump made no change at all. I figured that it was not the problem. Took it out and put original one back on.

Now, new injectors and still no fix.

Now more recently, and as mentioned above, as waiting for o ring to arrive, took out rail to clean and inspect. O ring arrived and put back on. Primed system , Went for test drive and car was running fine for about 4 miles at 40-45 mph, and then limp mode again, P0087, as usual.

However, that was the last time it went that far before limp mode. Now it doesn't even go more than 1/4 miles before limp mode and same code, except now get the P0191 occasionally along with the P0087.

My thought is that whatever has been wrong with HPFP, if that's the issue, finally got worse and to the point HPFP is completely done. Still starts right away, after limp mode, will start immediately but will not go but a few meters before it limps again.

In conclusion, maybe the used HPFP that was put on was just as bad and why did not improve.
 
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