Audi A1 limp mode after start up

   #1  

colin41

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Audi A1 that drops into limp mode shortly after startup when cold but fine when warm.

Code:
VIN: WAUZZZ8X0CB212311   License Plate: 


Chassis Type: 8X-AU21 (8U0)
Scan: 01 03 08 09 15 16 17 19 25 42 44 46 52 5F

VIN: WAUZZZ8X0CB212311   Mileage: 103730km-64454miles

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
5F-Information Electr. -- Status: OK 0000
 
-------------------------------------------------------------------------------
Address 01: Engine (J623-CAYC)       Labels:. 03L-906-023-CAY.clb
   Part No SW: 03L 906 023 KQ    HW: 03L 906 023 KP
   Component: R4 1.6l TDI   H63 9978  
   Revision: --H63---    Serial number:               
   Coding: 00114016030501080000
   Shop #: WSC 00046 790 00000
   ASAM Dataset: EV_ECM16TDI02103L906023KQ 003015
   ROD: EV_ECM16TDI02103L906023KG.rod
   VCID: 7F0A99A5E6176FBEE8-802A

1 Fault Found:
10117 - Fuel Pressure Regulation Valve 2 Control Difference 
          P229B 00 [167] - Pressure too High
          MIL ON - Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 2
                    Mileage: 103732 km
                    Date: 2017.12.16
                    Time: 16:06:30

                    Engine speed: 990.75 /min
                    Normed load value: 32.9 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 7 °C
                    Intake air temperature: 5 °C
                    Ambient air pressure: 990 mbar
                    Voltage terminal 30: 14.118 V
                    Unlearning counter according OBD: 40
                    Fuel high pressure: actual value-FUP_FIL: 35.675 MPa
                    Fuel pressure regulator valve: specified value rail pressure-LV_PCV_CTL: 00000001 
                    Engine status-SF_ENG_STATE: IS
                    Fuel temperature-TFU: 6 °C
                    Fuel Metering Valve-VCV: 24.918 %
                    Fuel Pressure Regulator Valve-PCV: 0.000 %
                    Fuel high pressure commanded value_1-FUP_SP_KPA_ENVD: 25592.041 kPa

Readiness: 0 0 0 0 0 

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 6R0-907-37x-ESP82.clb
   Part No SW: 6R0 907 379 BB    HW: 6R0 907 379 AH
   Component: ESP8.2i front H07 0001  
   Revision: --------    
   Coding: 330448E9436E00B4CC2812E3C2D200920C00
   Shop #: WSC 00046 000 00000
   VCID: 7F0A99A5EA176FBEE8-802A

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: None
   Part No SW: 8X0 820 045 A    HW: 8X0 820 045 A
   Component: J255 Klima Manuell  0140  
   Revision: 0000707S    Serial number: 03030006789104
   Shop #: WSC 00046 000 00000
   VCID: 3460868957D17CE645-8060

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 8X0-907-063.clb
   Part No SW: 8X0 907 063 G    HW: 8X0 907 063 G
   Component: BCM PQ35  M   110 0655  
   Revision: 00110 AE    
   Coding: 0E000A2CA805F100201841E000000154438B6C0A00CF4122DC0087830041
   Shop #: WSC 00046 000 00000
   VCID: 4088DA59D369D046D1-8014

   Subsystem 1 - Part No: 8X0 951 177 
   Component: DWA-Sensor H0  H01 0020 

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

1 Fault Found:
00332 - Control Circuit for Tank Flap 
            007 - Short to Ground
             Freeze Frame:
                    Fault Status: 01100111
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 208
                    Mileage: 87361 km
                    Time Indication: 0
                    Date: 2017.02.10
                    Time: 12:59:16

             Freeze Frame:
                        Term 15 Off
                    Voltage: 13.45 V
                        OFF
                        ON
                        Term 50 Off
                        OFF
                        OFF


-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 8X0-959-655.clb
   Part No SW: 8X0 959 655 B    HW: 8X0 959 655 B
   Component: Airbag10.41   H05 0009  
   Revision: --------    Serial number: 003KZ000C9YR
   Coding: 30314539303330303034554A305238583053
   Shop #: WSC 00046 000 00000
   ASAM Dataset: EV_Airba1041BPAAU210 001018
   ROD: EV_Airba1041BPAAU210.rod
   VCID: 499EC77DE853110E06-801C

   Crash sensor for side airbag: driver side: 
   Serial number: 3554VRB405N0U2UUFGVE

   Crash sensor for side airbag: front passenger side: 
   Serial number: 3575HRB406114JQMAP0L

   Crash sensor for front airbag: driver side: 
   Serial number: 3585HRB405J14JQM6G4U

   Rear Impact Crash Sensor: 
   Serial number: 3515ZRB405B0QMN2AHD5

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:| 8X0-953-569.clb
   Part No SW: 8X0 953 501 B    HW: 5K0 953 569 H
   Component: LENKS.MODUL   014 0140  
   Revision: FF010016    Serial number: 20120204100023
   Coding: 1184004000
   Shop #: WSC 00046 790 00000
   ASAM Dataset: EV_VW360SteerWheelUDS A03004
   ROD: EV_VW360SteerWheelUDS.rod
   VCID: 397EB7BDB8B3818E96-806C

   Multifunction steering wheel control module: 
   Subsystem 1 - Part No SW: 4G0 951 528 C    HW: 4G0 951 528 C
   Component: E221 - MFL  H08 0009 

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:| 8X0-920-xxx-17.clb
   Part No SW: 8X0 920 980 D    HW: 8X0 920 980 D
   Component: KOMBI_MEDIUM  H03 0180  
   Serial number: 00000000000000
   Coding: 41DE00
   Shop #: WSC 00046 790 00000
   ASAM Dataset: EV_Kombi_UDS_VDD_AU10 A04390
   ROD: EV_Kombi_UDS_VDD_AU10.rod
   VCID: 4088DA59DB69D046D1-8014

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels: 8X0-907-468.clb
   Part No SW: 8U0 907 468 A    HW: 8U0 907 468 A
   Component: GAT 4CAN 1L M H10 0044  
   Revision: 1P040023    Serial number: 2341P1212802B6
   Coding: FBCF005A000100010153
   Shop #: WSC 00046 000 00000
   VCID: 4088DA59D369D046D1-8014

   Subsystem 1 - Part No SW: 8K0 915 181 H    HW: 8K0 915 181 H
   Component: J367-BDM  H07 0171 
   Serial number: 00000000007100327882

   Subsystem 2 - Part No SW: 8K0 959 663 D    HW: 8K0 959 663 
   Component: J532_DCDCStab  H23 0021 
   Serial number: 02121100000000000267

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer (J334)       Labels:| 5K0-920-xxx-25.clb
   Part No SW: 8X0 920 980 D    HW: 8X0 920 980 D
   Component: IMMO          H03 0180  
   Serial number:               
   Coding: 000002
   Shop #: WSC 00046 790 00000
   ASAM Dataset: EV_Immo_UDS_VDD_AU10 A04110
   ROD: EV_Immo_UDS_VDD_AU10.rod
   VCID: 4088DA59DB69D046D1-8014

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:. 8X0-959-793.clb
   Part No SW: 8X0 959 793 B    HW: 8X0 959 793 B
   Component: TSG FA        H09 0409  
   Revision: --------    Serial number: --------------
   Coding: 011802200101000100
   Shop #: WSC 00046 000 00000
   VCID: 4C90FE69EF2104263D-8018

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 6Q0-423-156.clb
   Part No: 6R0 423 156 B
   Component: LenkhilfeTRW        V277  
   Coding: 11251
   Shop #: WSC 00046  
   VCID: 2F6A89E5EAF75F3E38-807A

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:. 8X0-959-792.clb
   Part No SW: 8X0 959 792 B    HW: 8X0 959 792 B
   Component: TSG BF        H09 0409  
   Revision: --------    Serial number: --------------
   Coding: 011802200101000100
   Shop #: WSC 00046 000 00000
   VCID: 4B92FD75EA2F031E34-801E

No fault code found.

-------------------------------------------------------------------------------
Address 5F: Information Electr. (J794)       Labels: None
   Part No SW: 8X0 035 183 E    HW: 8X0 035 183 D
   Component: RMC Cnct      H52 0775  
   Coding: 01010000000051070023000103010000010000
   Shop #: WSC 00046 000 00000
   VCID: 397EB7BDB0B3818E96-806C

   Subsystem 1 - Part No SW: 8X0 919 603     HW: 8X0 919 603 
   Component: DU6 Basic  H42 0084 
   Serial number: 9462AK0C2520731     

No fault code found.
 
   #2  

Jack@European_Parts

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Yeah the dump control PSI valve is sticking and when fuel is cold it is thicker so it can do this more raising the PSI.

Run some additives through with added lubricity or take apart and clean and polish everything!

1 cup of gasoline goes a long way mixed with fuel.
 
   #3  

colin41

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thank you sir. it has only started so hopefully additives will help it.
if not what valve is the fault code referring to? FPR in the rail?
 
   #4  

Jack@European_Parts

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   #5  

colin41

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just thought id come back to this. Used fuel additives and seems to have cured the problem.
 
   #7  

Jack@European_Parts

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A fun read and never gets old for me..........

https://www-odi.nhtsa.dot.gov/acms/cs/jaxrs/download/doc/UCM475595/INCR-EA11003-61863.pdf





Vehicle testing.


Volkswagen conducted vehicle testing with varying amounts of gasoline

misfueling to study the effects on engine performance and HPFP wear. The tests showed that
increased levels of gasoline will lead to driveability symptoms, such as engine stumbling, stuttering,
misfiring or rough running. According to Volkswagen, these symptoms start to become noticeable
at levels of gasoline misfueling of 50 percent. At levels of 80 percent
4 and above, Volkswagen

indicated that driveability issues worsen until the diesel engine will no longer run due to the
interruption of the combustion process. At very high levels of misfueling (80-85%), test vehicles
exhibited obvious knocking noise within a few seconds after starting the vehicle and showed a
significant reduction in engine response and transition to limp mode operation in less than a mile
after attempting to accelerate to highway speeds. No performance problems were observed in 378
miles of test driving a vehicle with 5% gasoline added to the diesel fuel and Volkswagen has
indicated that operation with small amounts of gasoline contamination should have no effect on
HPFP durability. No damage to the HPFP’s were observed by Volkswagen after misfuel tests with
either low or high amounts of gasoline misfueling.

Pump failure effects.



ODI evaluated the effects of HPFP drivetrain failure on engine performance

by: 1) reviewing Volkswagen’s descriptions of the failure mechanism and effects; 2) analyzing ODI
complaint narratives combined with follow-up interviews, when necessary; 3) analyzing diagnostic
data retrieved by Volkswagen from some ODI complaint vehicles; and 4) reviewing the results of
Volkswagen testing of a vehicle with a pre-damaged pump roller.
5


According to Volkswagen, drivetrain wear results in gradual reductions in fuel pressure due to
decreased pump plunger displacement. In addition, as wear progresses metal is abraded from
drivetrain surfaces forming small flakes that are circulated throughout the fuel system. Particles
caught in the metering unit strainer cause a pressure drop, which results in a fault code and warning
light. Volkswagen states that the rate of wear “depends on the properties of fuel being used as well
as pump load conditions.” Several of the pump failures in parts returned to ODI, or documented
during inspections by Bosch or by some consumers, displayed failures caused by rollers rotating 90
degrees relative to the cam, resulting in a distinct abrasive wear pattern in the center of the cam.
Figure 8 shows the Bosch self-stabilizing design and drivetrain damage resulting from roller
rotation in an ODI complaint vehicle that reported experiencing a sudden decrease in engine power
resulting in speed dropping from 70 mph to 50 mph, as the vehicle entered limp mode less than a
minute after the engine light and then glow plug lamp illuminated (VOQ 10354434).

4
Volkswagen indicated that a fuel tank mixture of 80% gasoline and 20% diesel would result from refueling with


gasoline shortly after the low fuel warning light has illuminated.


5
As previously noted, Volkswagen was not able
 
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