Fuel rail pressure fluctuations

   #1  

BB tt

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So having no fault codes but getting fluctuation in pressure. Is this normal or is the hpfp or lpfp possibly going bad?



you can the fluctuation in this one also the red bar graph in middle for fuel rail pressure




Code:
Saturday,10,October,2020,20:59:42:51129
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
VCDS Version: 20.4.1.0 (x64)
Data version: 20200331 DS317.0
www.Ross-Tech.com


VIN: WAU4FAFL0BA143516   License Plate:


Chassis Type: FL-AU48 (8T0)
Scan: 01 02 03 05 08 09 10 13 15 16 17 19 36 3C 42 46 47 52 53 55
          56 5F 62 6C 6D 72

VIN: WAU4FAFL0BA143516   Mileage: 136470km-84798miles

01-Engine -- Status: OK 0000
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
04-Steering Angle -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: Malfunction 0010
10-Park/Steer Assist -- Status: OK 0000
13-Auto Dist. Reg -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
36-Seat Mem. Drvr -- Status: OK 0000
3C-Lane Change -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
46-Central Conv. -- Status: Malfunction 0010
47-Sound System -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
55-Headlight Range -- Status: OK 0000
56-Radio -- Status: OK 0000
5F-Information Electr. -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
6C-Back-up Cam. -- Status: OK 0000
6D-Trunk Elect. -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000

-------------------------------------------------------------------------------
Address 01: Engine (0-----CAEB)       Labels:| 06H-907-115-CAB.clb
   Part No SW: 8K2 907 115 AG    HW: 8K2 907 115 D
   Component: 2.0l R4/4V TF X19 0002 
   Revision: E1X19---   
   Coding: 010C010A290F0260
   Shop #: WSC 04919 000 00000
   ASAM Dataset: EV_ECM20TFS0118K2907115AG 001002
   ROD: EV_ECM20TFS0118K2907115AG.rod
   VCID: 74E7A39EDF7C96261F-8020

No fault code found.
Readiness: 1110 0101

-------------------------------------------------------------------------------
Address 02: Auto Trans (J217)       Labels:| 0BK-927-156.clb
   Part No SW: 8K0 927 158 S    HW: 0BK 927 156 R
   Component: 0BK 20TFSIUSA H08 1005 
   Revision: --H08---   
   Coding: 000002
   Shop #: WSC 00000 000 00000
   ASAM Dataset: EV_TCMAL551211 002018
   ROD: EV_TCMAL551211_002_AU48.rod
   VCID: 46832956F96054B671-8012

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 8K0-907-379-V1.clb
   Part No SW: 8K0 907 379 BJ    HW: 8K0 907 379 BJ
   Component: ESP8 quattro  H04 0060 
   Revision: --------    Serial number: --------------
   Coding: 1D0D18
   Shop #: WSC 06334 000 00000
   VCID: 020BF5469DC8A8961D-8056

No fault code found.

-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J393)       Labels:. 8K0-907-064-05.clb
   Part No SW: 8K0 907 064 CH    HW: 8K0 907 064 CH
   Component: BCM2 2.0      H05 0435 
   Revision: 00002001   
   Coding: 0D0200
   Shop #: WSC 06335 000 00000
   VCID: 78FF97AECB14F24633-802C

   Subsystem 1 - Part No SW: 8K0 905 852 D    HW: 8K0 905 852 D
   Component: J764 ELV MLB  H37 0042
   Serial number: 2311000036059006   

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels:. 8Tx-820-043-3Z.clb
   Part No SW: 8T1 820 043 AQ    HW: 8T1 820 043 AQ
   Component: KLIMA 3 ZONEN H08 0180 
   Revision: C1000000    Serial number: 01170320110384
   Coding: 64102000
   Shop #: WSC 06335 000 00000
   VCID: 000FFF4E93C4BA860B-8054

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 8K0-907-063.clb
   Part No SW: 8K0 907 063 P    HW: 8K0 907 063 P
   Component: BCM1 1.0      H30 0392 
   Revision: 10030001    Serial number: 00000000987968
   Coding: 26001011003CAF211400080300003D0D4F9C460802010161000000
   Shop #: WSC 06335 123 12345
   VCID: 3C774BBEBFAC1E6617-8068

   Subsystem 1 - Part No SW: 8K1 955 119 A    HW: 8T1 955 119   Labels: 1KX-955-119.CLB
   Component: WWS 150311  H07 0070
   Serial number: SWF11030155090     
   Coding: 00FD11

   Subsystem 2 - Part No SW: 8K0 955 559     HW: 8K0 955 559   Labels: 8K0-955-559.CLB
   Component: RLS  H04 0003
   Serial number: 11328707           
   Coding: 025028

   Subsystem 3 - Part No SW: 8K0 941 531 AS    HW: 8K0 941 531 AS
   Component: E1 - LDS  H03 0031
   Serial number: 00000000000803111272

   Subsystem 4 - Part No SW: 8K0 907 410 C    HW: 8K0 907 410 C
   Component: HOMELINK  H01 0010

1 Fault Found:
03207 - Charisma Switch Module
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 174
                    Mileage: 136474 km
                    Time Indication: 0
                    Date: 2020.10.10
                    Time: 20:53:00


-------------------------------------------------------------------------------
Address 10: Park/Steer Assist (J446)       Labels:. 8K0-919-475.clb
   Part No SW: 8K0 919 475 T    HW: 8P0 919 475 M
   Component: PARKHILFE 4K  H01 0080 
   Revision: 11001001    Serial number: 36891106754845
   Coding: 300103
   Shop #: WSC 06335 123 12345
   VCID: 4A9B1D66E578B0D695-801E

No fault code found.

-------------------------------------------------------------------------------
Address 13: Auto Dist. Reg (J428)       Labels: None
   Part No SW: 8K0 907 561     HW: 8K0 907 561
   Component: ACC2          H09 0080 
   Serial number: 00000000000000
   Coding: 00C7AE
   Shop #: WSC 06335 000 00000
   VCID: 6FEDACF2BE5AB5FEE2-803A

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 8K0-959-655.clb
   Part No SW: 8K0 959 655 K    HW: 8K0 959 655 K
   Component: AirbagVW-AU10 H44 0610 
   Serial number: 003GLD0NA8CK 
   Coding: 303837354230303030304A55304C384B3053
   Shop #: WSC 06335 000 00000
   ASAM Dataset: EV_AirbaECUVWAUDI010 003010
   ROD: EV_AirbaECUVWAUDI010_003_AU48.rod
   VCID: 45812E5AC4665FAE78-8010

   Seat occupied recognition:
   Subsystem 1 - Part No SW: 8K0 959 339 C    HW: 8K0 959 339 C
   Component: BF-Gewichtss.  H02 0040
   Serial number: 5810000R1000002FFU

   Crash sensor for side airbag: driver side:
   Serial number: 6334MSME5C7512229

   Crash sensor for side airbag: front passenger side:
   Serial number: 6344MSME5C356F32P

   Crash sensor for side airbag: rear: driver side:
   Serial number: 6352QSME61082D76K

   Crash sensor for side airbag: rear: passenger side:
   Serial number: 6362QSME5B0A4650J

   Crash sensor for front airbag: driver side:
   Serial number: 63732SME28062672W

   Crash sensor for front airbag: front passenger side:
   Serial number: 63832SME2D062850-

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:. 8K0-953-568.clb
   Part No SW: 8R0 953 568 M    HW: 8R0 953 568 M
   Component: Lenks.Modul   H07 0156 
   Revision: 00000000    Serial number: 20110317000482
   Coding: 00003F
   Shop #: WSC 06335 000 00000
   VCID: 4B951862EA02A9DEAE-801E

   Component: E221 - MFL  H02 0010

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:. 8T0-920-xxx-17.clb
   Part No SW: 8K0 920 981 H    HW: 8K0 920 981 H
   Component: KOMBIINSTR.   H24 0258 
   Revision: 00000000    Serial number: EJJ73E13C    
   Coding: 835F11000700D704020000
   Shop #: WSC 06335 123 12345
   VCID: 387F57AE8B943246F3-806C

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 8T0-907-468.clb
   Part No SW: 8T0 907 468 AE    HW: 8T0 907 468 L
   Component: GW-BEM 5CAN-M H10 0117 
   Revision: FC100058    Serial number: 5800F1122800F9
   Coding: 00C303
   Shop #: WSC 06335 000 00000
   VCID: 0407F35E87DCA6A62F-8050

   Subsystem 1 - Part No SW: 8K0 915 181 E    HW: 8K0 915 181 E
   Component: J367-BDM  H07 0170
   Serial number: 1100DFA2010311     

No fault code found.

-------------------------------------------------------------------------------
Address 36: Seat Mem. Drvr (J136)       Labels:. 8T0-959-760.clb
   Part No SW: 8K0 959 760 D    HW: 8K0 959 760 D
   Component: MEM-FS        H06 0074 
   Revision: AA000000    Serial number: 00001002352920
   Coding: 00581B00000000000000
   Shop #: WSC 06335 000 00000
   VCID: 3B7548A2BAA2195E1E-806E

No fault code found.

-------------------------------------------------------------------------------
Address 3C: Lane Change        Labels: None
   Part No SW: 8K0 907 566 H    HW: 4L0 907 566 B
   Component: J0769_SWA_MasterH01 0030 
   Revision: 00H01000    Serial number: 6PZ 009 014-82
   Coding: 0000002
   Shop #: WSC 23181 002 1048576
   VCID: 3C774BBE7FAC1E6617-8068

   Subsystem 1 - Part No: 8K0 907 568 H
   Component: J0770_SWA_Slave_H01 0030

   Subsystem 2 - Serial number: 6PZ 009 014-92

   Subsystem 3 - Serial number: 5F03.03.1100H010003C321420ÿ

   Subsystem 4 - Serial number: 321420ÿ

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:. 8K0-959-793.clb
   Part No SW: 8K0 959 793 M    HW: 8K0 959 793 M
   Component: TSG FA        H12 0357 
   Revision:             Serial number: 0004100038559
   Coding: 011C13204E00410001
   Shop #: WSC 06335 000 00000
   VCID: 4A9B1D66E578B0D695-801E

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv. (J393)       Labels:. 8K0-907-064-46.clb
   Part No SW: 8K0 907 064 CH    HW: 8K0 907 064 CH
   Component: BCM2 2.0      H05 0435 
   Revision: 00002001    Serial number: 0142789328   
   Coding: 013E0E3A20BA741583B0023204000000
   Shop #: WSC 06335 123 12345
   VCID: 78FF97AECB14F24633-802C

   Subsystem 1 - Part No SW: 8K0 959 719 B    HW: 8K0 959 719
   Component: GTO BF  H01 0070
   Serial number: 00000000000000375074

   Subsystem 2 - Part No: 1K0 951 605 C
   Component: LIN BACKUP HO  H05 1501

   Subsystem 3 - Part No SW: 8K0 959 591 A    HW: 8K0 959 591
   Component: J245 PS136  H07 0041

   Subsystem 4 - Part No SW: 8K0 959 591 A    HW: 8K0 959 591
   Component: J394 PS229  H07 0041

1 Fault Found:
03156 - Sensor for Anti-Theft System (G578)
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 174
                    Mileage: 136474 km
                    Time Indication: 0
                    Date: 2020.10.10
                    Time: 20:53:18


-------------------------------------------------------------------------------
Address 47: Sound System (J525)       Labels:. 8T0-035-223-BOM.clb
   Part No SW: 8T0 035 223 AN    HW: 8T0 035 223 AK
   Component: DSP Prem      H10 0190 
   Revision: 00010001    Serial number: 34804004322301
   VCID: 7AFB8DA6F518E05645-802E

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:. 8K0-959-792.clb
   Part No SW: 8K0 959 792 M    HW: 8K0 959 792 M
   Component: TSG BF        H12 0357 
   Revision:             Serial number: 0004100036673
   Coding: 011C13205E00410001
   Shop #: WSC 06335 123 12345
   VCID: 4999226AE07EBBCE9C-801C

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake (J540)       Labels: 8K0-907-801-V1.clb
   Part No SW: 8K0 907 801 H    HW: 8K0 907 801 H
   Component: EPB Audi B8   H09 0100 
   Revision: 00000003    Serial number: 10000000747799
   Shop #: WSC 00000 000 00000
   VCID: 3467639E97FCD626DF-8060

No fault code found.

-------------------------------------------------------------------------------
Address 55: Headlight Range        Labels: 8K0-907-357.clb
   Part No: 8K5 907 357 B
   Component: Dynamische LWR  H02 0010 
   Revision: 00000001    Serial number:              
   Coding: 0000004
   Shop #: WSC 06335 000 00000
   VCID: 397952AA709E2B4E0C-806C

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio (R)       Labels: Redir Fail!
   Part No SW: 4G0 035 082     HW: 4G0 035 082
   Component: Radio U SIRIU H51 0052 
   Revision: AB001007    Serial number: 471C50B7565987
   Coding: 020007010000000001
   Shop #: WSC 06335 000 00000
   VCID: 5DB1E63A44F6376E40-8008

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels:. 4E0-035-6xx-5F.clb
   Part No SW: 8T1 035 664 C    HW: 8T1 035 664 B
   Component: H-BN-NA       H51 0116 
   Revision: --------    Serial number: 490C60B7609889
   Coding: 010200010106E9EF75001F0E000000030000
   Shop #: WSC 06335 123 12345
   VCID: 387F57AE8B943246F3-806C

   Subsystem 1 - Part No: 8R0 060 884 P
   Component: NAR 2010  0407

   Subsystem 2 - Part No SW: 8F0 919 604     HW: 8F0 919 604
   Component: DU7 High  H43 0084
   Serial number: 9466C-0B0538276    

   Subsystem 3 - Part No SW: 8T0 919 609 G    HW: 8T0 919 609 G
   Component: E0380 Bedient  H08 0100
   Serial number: 00000000770413     

   Subsystem 4 - Part No: 8R0 060 961
   Component: CD-Database  1886

No fault code found.

-------------------------------------------------------------------------------
Address 62: Door, Rear Left (J388)       Labels:. 8K0-959-795.clb
   Part No SW: 8K0 959 795 F    HW: 8K0 959 795 F
   Component: TSG HL        H11 0357 
   Revision:             Serial number: 0000114049023
   Coding: 010C13204000210001
   Shop #: WSC 06335 000 00000
   VCID: 45812E5ACC665FAE78-8010

No fault code found.

-------------------------------------------------------------------------------
Address 6C: Back-up Cam.        Labels: 8T0-907-441.clb
   Part No SW: 8T0 907 441 C    HW: 4L0 907 441 B
   Component: J772__Rearview      0040 
   Revision: --H05---    Serial number: 525PA8-J0Z93QF
   Coding: 1000007
   Shop #: WSC 06335 000 00000
   VCID: 387F57AE4B943246F3-806C

No fault code found.

-------------------------------------------------------------------------------
Address 6D: Trunk Elect. (J605)       Labels: 8K9-827-851.clb
   Part No SW: 8K9 827 851 A    HW: 8K9 827 851 A
   Component: J605  Master  H51 0330 
   Revision: --------    Serial number: 8K9827851A   
   VCID: 3C774BBEBFAC1E6617-8068

   Subsystem 1 - Part No SW: 8K9 827 852 A    HW: 8K9 827 852 A
   Component: J756  Slave  H51 0330
   Serial number: 8K9827852A         

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right (J389)       Labels:. 8K0-959-795.clb
   Part No SW: 8K0 959 795 F    HW: 8K0 959 795 F
   Component: TSG HR        H11 0357 
   Revision:             Serial number: 0000114049024
   Coding: 010C13204000210001
   Shop #: WSC 06335 000 00000
   VCID: 45812E5ACC665FAE78-FFFE
EDIT:
looking at log from few years ago was fluctuating then also



'
 
Last edited:
   #2  

PetrolDave

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Sound like it's been fluctuating for several years but causing no problems - maybe a case of "it ain't broke so don't fix it"?
 
   #3  

MVB

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Looks normal to me

This is a Log in 3rd to redline



And this is the same log with the Lpfp,load and the difference between spec. vs actual removed




Looks terrible but actual is only 3bars off at the most, yours appear to be 5bars off at most but your spec. is 160bar and not 110bar which mine is. Car runs great with no issues, I also have logs for idle and 2500rpm steady state and they all show the fluctuation.
 
Last edited:
   #4  

Jack@European_Parts

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-------------------------------------------------------------------------------
Address 01: Engine (0-----CAEB) Labels:| 06H-907-115-CAB.clb
Part No SW: 8K2 907 115 AG HW: 8K2 907 115 D
Component: 2.0l R4/4V TF X19 0002
Revision: E1X19---
Coding: 010C010A290F0260
Shop #: WSC 04919 000 00000
ASAM Dataset: EV_ECM20TFS0118K2907115AG 001002
ROD: EV_ECM20TFS0118K2907115AG.rod
VCID: 74E7A39EDF7C96261F-8020

No fault code found.
Readiness: 1110 0101

-------------------------------------------------------------------------------
Address 02: Auto Trans (J217) Labels:| 0BK-927-156.clb
Part No SW: 8K0 927 158 S HW: 0BK 927 156 R
Component: 0BK 20TFSIUSA H08 1005
Revision: --H08---
Coding: 000002
Shop #: WSC 00000 000 00000
ASAM Dataset: EV_TCMAL551211 002018
ROD: EV_TCMAL551211_002_AU48.rod
VCID: 46832956F96054B671-8012

No fault code found.

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

Huh what's this all about? :popcorn:



Audi
PartVersion
FL_8K2907115AG0002
0003
0004

Audi
PartVersion
FL_8K0927158S_1002
1003
1005
1006
1007
 
   #5  

BB tt

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


Huh what's this all about? :popcorn:



Audi
PartVersion
FL_8K2907115AG0002
0003
0004

Audi
PartVersion
FL_8K0927158S_1002
1003
1005
1006
1007
not really sure what your question is Jack. below is from the first log i took after purchasing the car my guess is at some point they performed a SB and updated the TCU SW. car had just been traded in after the cpo warranty ran out when i bought it.

Address 01: Engine (0-----CAEB) Labels:| 06H-907-115-CAB.clb
Part No SW: 8K2 907 115 AG HW: 8K2 907 115 D
Component: 2.0l R4/4V TF H19 0002
Revision: E1H19---
Coding: 010C010A290F0260
Shop #: WSC 41877 001 1048576
ASAM Dataset: EV_ECM20TFS0118K2907115AG 001002
ROD: EV_ECM20TFS0118K2907115AG.rod
VCID: 74E7A39EDF7C96E685-8020

3 Faults Found:
4063 - Cylinder 4
P0304 00 [032] - Misfire Detected
Intermittent - Not Confirmed - Tested Since Memory Clear

4057 - Cylinder 2
P0302 00 [032] - Misfire Detected
Intermittent - Not Confirmed - Tested Since Memory Clear

4051 - Random/Multiple Cylinder Misfire Detected
P0300 00 [032] - -
Intermittent - Not Confirmed - Tested Since Memory Clear

Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 02: Auto Trans (J217) Labels:| 0BK-927-156.clb
Part No SW: 8K0 927 158 S HW: 0BK 927 156 R
Component: 0BK 20TFSIUSA H08 1005
Revision: --H08---
Coding: 000002
Shop #: WSC 00000 000 00000
ASAM Dataset: EV_TCMAL551211 002018
ROD: EV_TCMAL551211_002_AU48.rod
VCID: 46832956F9605476EB-8012

No fault code found.

 
   #6  

BB tt

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potentially a dirty fuel filter?
 
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