2010 audi a3 2.0ltr common rail, CFFB engine. fuel pressure fault.

   #1  

Pinpointdiag

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Hi I have a problem with an A3 that belongs to a motor trade customer, The previous history is unknown and it was bought at auction with this
fault.
The car starts and runs every time although it cranks a little longer than i think is normal. It has a rev limit when stationary and produces no fault codes
untill driven. At which point it drops in to limited performance mode and logs faults for fuel pressure.
The fuel pressure is to low, when over 2500rpm under load the actual and desired pressures are way off.

I have so far tried the following.

Replaced fuel filter, Checked for any sign of air in fuel. Confirmed that there is plenty of good fuel in the tank.
Checked that both low pressure pumps are running, Then tested the low fuel pessure and found it to be 4 bar at all times, when driving and
under load low pressure is still 4 bar. My info says 3.8 so i'm fairly confident the low pressure system is ok.

I'v also done an injector back leakage test in the workshop and also driving when the fault happens using a pressure transducer and scope.
The injector back leakege does not suddenly increase when fault happens.

I have looked at duty cycle and current with a scope of both the inlet metering valve and the desiel regulating valve. but i dont have good data to compair with.

The fuel system is I believe EDC17 with a cp4.1 single piston pump. I have read that they are becoming common failures and that swarf can sometimes be found in the pump under the inlet metring valve. which i'v removed but found it to be clean.

There are a very large amount of data blocks in vcds and i wonder if any one has any advice on which ones if any may help.

I have alldata euro access to the workshop manuel which i'm not so sure is as good as erwin.

Any advice as to where to go next would be much appreciated

The trade customer is however as tight as a drum and is all ready talking about punting it back through the auction if i think its the pump.

Cheers Alan

Code:
Tuesday,15,August,2017,06:31:32:05279
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x86
VCDS Version: 17.1.3.0
Data version: 20170320 DS267.7
www.Ross-Tech.com


VIN: WAUZZZ8P0AB020805   License Plate: 


Chassis Type: 8P (1K0)
Scan: 01 03 08 09 15 16 17 19 25 42 44 46 52 56 61 62 72

VIN: WAUZZZ8P0AB020805   Mileage: 156060km-96971miles

01-Engine -- Status: Malfunction 0010
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
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
56-Radio -- Status: OK 0000
61-Battery Regul. -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
 
-------------------------------------------------------------------------------
Address 01: Engine (J623-CFFB)       Labels: 03L-906-018-CFF.clb
   Part No SW: 03L 906 018 AB    HW: 03L 906 018 AG
   Component: R4 2,0L EDC   X20 6744  
   Revision: 41X20---    Serial number: AUX7Z0J1FN30PB
   Coding: 00190012040501080000
   Shop #: WSC 02069 000 90108
   ASAM Dataset: EV_ECM20TDI01103L906018AB 003006
   ROD: EV_ECM20TDI01103L906018AB.rod
   VCID: 6ADF9A4C8D6B761157-803E

3 Faults Found:
5211 - Fuel Rail/System Pressure 
          P0087 00 [101] - Too Low
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 2
                    Mileage: 156066 km
                    Date: 2017.08.17
                    Time: 01:39:30

                    Engine speed: 2783.00 /min
                    Normed load value: 99.6 %
                    Vehicle speed: 74 km/h
                    Coolant temperature: 78 °C
                    Intake air temperature: 35 °C
                    Ambient air pressure: 980 mbar
                    Voltage terminal 30: 14.360 V
                    Unlearning counter according OBD: 77
                    Fuel temperature: 35.3 °C
                    Mean injection quantity: 66.86 mg/stroke
                    Rail pressure regulation: status-Bit 0: 00000101 
                    Fuel high pressure: actual value: 583400 hPa
                    High fuel pressure: specified value: 1.4e+006 hPa
                    Pressure control valve adaptation factor: 1.0463
                    Fuel level: 18.00 l

5227 - Fuel Rail/System Pressure 
          P0087 00 [172] - Too Low
          MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 2
                    Mileage: 156068 km
                    Date: 2017.08.17
                    Time: 01:40:47

                    Engine speed: 1473.00 /min
                    Normed load value: 55.3 %
                    Vehicle speed: 39 km/h
                    Coolant temperature: 79 °C
                    Intake air temperature: 27 °C
                    Ambient air pressure: 980 mbar
                    Voltage terminal 30: 14.380 V
                    Unlearning counter according OBD: 40
                    Fuel temperature: 36.8 °C
                    Mean injection quantity: 26.83 mg/stroke
                    Rail pressure regulation: status-Bit 0: 00000100 
                    Fuel high pressure: actual value: 683600 hPa
                    High fuel pressure: specified value: 937300 hPa
                    Pressure control valve adaptation factor: 1.0106
                    Fuel level: 18.00 l

5175 - Fuel Pressure Regulation 
          P1065 00 [101] - Regulation Discrepancy
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 156068 km
                    Date: 2017.08.17
                    Time: 01:41:02

                    Engine speed: 1683.00 /min
                    Normed load value: 98.8 %
                    Vehicle speed: 44 km/h
                    Coolant temperature: 80 °C
                    Intake air temperature: 26 °C
                    Ambient air pressure: 980 mbar
                    Voltage terminal 30: 14.680 V
                    Unlearning counter according OBD: 40
                    Engine status: COENG_RUNNING
                    Fuel temperature: 37.0 °C
                    Mean injection quantity: 24.18 mg/stroke
                    Pressure control valve adaptation factor: 0.7000
                    Fuel pressure regulator valve: specified value rail pressure: 1.5122e+006 hPa
                    High fuel pressure: specified value: 1.0579e+006 hPa
                    Fuel high pressure: actual value: 878900 hPa

Readiness: 1 1 0 0 0 

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels: 1K0-907-379-60EC1F.clb
   Part No SW: 1K0 907 379 AJ    HW: 1K0 907 379 AJ
   Component: ESP MK60EC1   H30 0107  
   Revision: 00H30001    
   Coding: 13424012092400FAC81302E4901E0092380800
   Shop #: WSC 00046 412 00000
   VCID: 7AFFAA0CF5CBC691A7-802E

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: None
   Part No SW: 8P0 820 047 D    HW: 8P0 820 047 D
   Component: J255  Klima Man H08 0060  
   Revision: 00H08004    Serial number: 00000000000000
   Shop #: WSC 00000 000 00000
   VCID: 316D4D20A83DC5C956-8064

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels: 8P0-907-063.clb
   Part No SW: 8P0 907 063 A    HW: 8P0 907 063 A
   Component: BCM PQ35  M   105 0575  
   Revision: 00105 AK    
   Coding: 0E000A2FB005F0C0207041E00000015C431A29AA004DC122E4008F800041
   Shop #: WSC 00046 412 00000
   VCID: 326F422C6D3BFED12F-8066

   Subsystem 1 - Part No SW: 8P2 955 119 F    HW: 8P2 955 119 F  Labels: 1KX-955-119.CLB
   Component: Wischer AU350  H10 0040 
   Coding: 00DD13

   Subsystem 2 - Part No: 8P0 951 177 
   Component: Innenraumuebe  H04 0020 

   Subsystem 3 - Part No: 1K8 951 605 
   Component: LIN BACKUP HO  H09 9002 

   Subsystem 4 - Part No: 1K0 907 719 C
   Component: Neigungssenso  005 0003 

1 Fault Found:
01134 - Alarm Horn (H12) 
            014 - Defective
             Freeze Frame:
                    Fault Status: 01101110
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 150
                    Mileage: 156062 km
                    Time Indication: 0
                    Date: 2017.08.16
                    Time: 23:38:30

             Freeze Frame:
                        Term 15 On
                    Voltage: 14.65 V
                        ON
                        ON
                        Term 50 On
                        OFF
                        OFF


-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels: 8P0-959-655-10.clb
   Part No SW: 8P0 959 655 P    HW: 8P0 959 655 P
   Component: Airbag AU1042 H06 0160  
   Revision: --------    Serial number: 003FB004YWV1
   Coding: 30314238303830303037554A305238503053
   Shop #: WSC 00046 412 00000
   ASAM Dataset: EV_Airba10AURB4 001001
   ROD: EV_Airba10AURB4.rod
   VCID: 4FA92BD816C9B33920-801A

   Crash sensor for side airbag: driver side: 
   Serial number: 3572DRB40000A58CF24%

   Crash sensor for side airbag: front passenger side: 
   Serial number: 3582DRB40000A4D5010K

   Crash sensor for side airbag: rear: driver side: 
   Serial number: 35128RB4000054342261

   Crash sensor for side airbag: rear: passenger side: 
   Serial number: 35228RB4000054A53014

   Crash sensor for front airbag: driver side: 
   Serial number: 35547RB40000552F285M

   Crash sensor for front airbag: front passenger side: 
   Serial number: 35647RB40000552F21DO

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 8P0-953-549.lbl
   Part No SW: 8P0 953 549 K    HW: 8P0 953 549 K
   Component: J0527           H37 0070  
   Coding: 0002012
   Shop #: WSC 00046 412 00000
   VCID: 46870EFC31B3727193-8012

   Subsystem 1 - Part No: XXXXXXXXXXX 
   Component: E0221           H02 0100

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 8P0-920-xxx-17-MY8.clb
   Part No SW: 8P0 920 982 J    HW: 8P0 920 982 J
   Component: KOMBIINSTR. VDO H03 0990  
   Revision: D0H03005    Serial number: 2241J005018539
   Coding: 0004428
   Shop #: WSC 00028 001 00001
   VCID: 408B18E413975C41A9-8014

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels: 1K0-907-530-V4.clb
   Part No SW: 1K0 907 530 AF    HW: 1K0 907 951 
   Component: J533  Gateway   H17 0233  
   Revision:   H17       Serial number: 1521J101150291
   Coding: E9807F06000202042103
   Shop #: WSC 00046 412 00000
   VCID: 6BD19F484A916F192C-803E

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer        Labels: 1K0-920-xxx-25.clb
   Part No SW: 8P0 920 982 J    HW: 8P0 920 982 J
   Component: KOMBIINSTR. VDO H03 0990  
   Revision: D0H03005    Serial number: AUX7Z0J1FN30PB
   Shop #: WSC 00000 000 00000
   VCID: 408B18E413975C41A9-8014

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver        Labels: 8P0-959-801-MIN3.lbl
   Part No SW: 8P0 959 801 N    HW: 8P0 959 801 N
   Component: Tuer-SG         H04 0100  
   Coding: 0131764
   Shop #: WSC 00046 412 00000
   VCID: 46870EFC31B3727193-8012

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
   Part No: 1K0 909 144 J
   Component: EPS_ZFLS Kl. 232    3001  
   Revision: 00H17000    
   Shop #: WSC 00046 000 90108
   VCID: 316D4D20A83DC5C956-8064

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass.        Labels: 1K0-959-702-MIN3.clb
   Part No SW: 8P0 959 802 N    HW: 8P0 959 802 N
   Component: Tuer-SG         H04 0100  
   Coding: 0131764
   Shop #: WSC 00046 412 00000
   VCID: 479903F836B96B7968-8012

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio        Labels: 8J0-035-1xx-56.clb
   Part No SW: 8P0 035 152 E    HW: 8P0 035 152 E
   Component: R Chorus2+      H03 0280  
   Revision: 00H03000    Serial number: AUZ1Z2K6131210
   Coding: 0200021
   Shop #: WSC 00046 412 00000
   VCID: 2D555150B405A12972-8078

No fault code found.

-------------------------------------------------------------------------------
Address 61: Battery Regul. (J840)       Labels: 1K0-907-534.clb
   Part No SW: 1K0 907 534     HW: 1K0 907 951 
   Component: Batt.regelung H17 0233  
   Revision: --------    Serial number: 1521J101150291
   Coding: 0303085A
   Shop #: WSC 00046 412 00000
   VCID: 68DBE0449B67440141-803C

   Subsystem 1 - Part No SW: 1K0 915 181 C    HW: 1K0 915 181 A
   Component: J367-BDM  H07 0125 
   Serial number: 00000000002790901689

No fault code found.

-------------------------------------------------------------------------------
Address 62: Door, Rear Left        Labels: 8P4-959-801.lbl
   Part No SW: 8P4 959 801 F    HW: 8P4 959 801 F
   Component: Tuer-SG         H04 0050  
   Coding: 0131216
   Shop #: WSC 00046 412 1012544
   VCID: 428F12EC1D9B4E51BF-8016

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right        Labels: 8P4-959-802.lbl
   Part No SW: 8P4 959 802 F    HW: 8P4 959 802 F
   Component: Tuer-SG         H04 0050  
   Coding: 0131216
   Shop #: WSC 00046 412 1012544
   VCID: 438117E802814759B4-8016

No fault code found.

End-------------------------(Elapsed Time: 02:26)--------------------------
 
   #2  

Jack@European_Parts

NostraJackAss
Joined
Jan 29, 2014
Messages
21,635
Reaction score
9,139
Location
Montgomery, NY, USA
VCDS Serial number
C?ID=57337
I have alldata euro access to the workshop manuel which i'm not so sure is as good as erwin.

It is not...........might as well be no data.

Might be the HPP failing or the regulation piston being stuck & due to lubricity issues.
You can try to clean the control PSI regulation unit within the HPP pump or replace the HPP so you meet the required fuel PSI and volume targets.
 
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