P0456 - very small EVAP leak

   #1  

otto

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How can VAG-COM be used to test the EVAP system?
 
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Uwe

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   #3  

otto

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Code:
Monday,20,November,2017,12:38:08:24553
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x64
VCDS Version: 17.8.0.1 (x64)  HEX-NET CB: 0.4401.4
Data version: 20170721 DS276.2
[url]www.Ross-Tech.com[/url]


VIN: 3VWRM71K49M058995   License Plate: 
Mileage: 112440km-69866mi   Repair Order: 



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


Chassis Type: 1K (1K0)
Scan: 01 02 03 08 09 0F 15 16 17 19 25 42 44 46 52 56 62 65 72

VIN: 3VWRM71K49M058995   Mileage: 112440km-69866miles

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: OK 0000
0F-Digital Radio -- 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
62-Door, Rear Left -- Status: OK 0000
65-Tire Pressure -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (CBT)       Labels: 07K-906-055-CBT.clb
   Part No SW: 07K 906 055 P    HW: 07K 906 055 M
   Component: 2,5l R5/4V      G   9205  
   Revision: G6H02---    Serial number: VWX7Z0H82490CJ
   Coding: 0000075
   Shop #: WSC 00066 000 00000
   VCID: BB367E71FA3AC99E1F-80EE

1 Fault Found:
001110 - EVAP System 
               P0456 - 000 - Very Small Leak Detected - MIL ON
             Freeze Frame:
                    Fault Status: 11100000
                    Fault Priority: 0
                    Fault Frequency: 1
                    Reset counter: 255
                    Mileage: 112335 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 03:35:16

             Freeze Frame:
                    RPM: 732 /min
                    Load: 28.2 %
                    Speed: 0.0 km/h
                    Temperature: 55.0°C
                    Temperature: 11.0°C
                    Absolute Pres.: 990.0 mbar
                    Voltage: 14.097 V

Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 02: Auto Trans        Labels: 09G-927-750.clb
   Part No SW: 09G 927 750 JE    HW: 09G 927 750 JE
   Component: AQ 250 6F           1377  
   Revision: 00H76000    Serial number:               
   Coding: 0000840
   Shop #: WSC 00066 000 00000
   VCID: FDB2B069A4AE07AE61-80A8

No fault code found.

-------------------------------------------------------------------------------
Address 03: ABS Brakes (-----)       Labels:. 1K0-907-379-60EC1F.clb
   Part No SW: 1K0 907 379 CD    HW: 1K0 907 379 AD
   Component: ESP MK60EC1   H35 0120  
   Revision: 00H35001    
   Coding: 113B400D49270002881402ED921E00413000
   Shop #: WSC 62973 001 1048576
   VCID: F6A0AF45419854F620-80A2

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 1K0-820-047.lbl
   Part No SW: 1K0 820 047 JM    HW: 1K0 820 047 JM
   Component: Climatic PQ35   142 1212  
   Revision: 00142032    Serial number: 00000000000000
   Shop #: WSC 00000 000 00000
   VCID: F8BCA17D8B8C228632-80AC

No fault code found.

-------------------------------------------------------------------------------
Address 09: Cent. Elect.        Labels:. 3C0-937-049-30-M.lbl
   Part No SW: 3C8 937 049 D    HW: 3C8 937 049 D
   Component: Bordnetz-SG     H54 2602  
   Revision: 00H54000    Serial number: 00000001080695
   Coding: 14058E234004150007140000001400000008730B5C000120000000000000
   Shop #: WSC 00066 000 00000
   VCID: B22853552D7008D6CC-80E6

   Subsystem 1 - Part No: 1K1 955 119 E  Labels: 1KX-955-119.CLB
   Component: Wischer 290908 021  0501  
   Coding: 00038805
   Shop #: WSC 00066  

No fault code found.

-------------------------------------------------------------------------------
Address 0F: Digital Radio        Labels: 8E0-035-593-SIR.lbl
   Part No SW: 8E0 035 593 M    HW: 8E0 035 593 M
   Component: SDAR SIRIUS     H07 0150  
   Revision: 00000000    Serial number: AUZ4Z7H0427278
   Coding: 0000100
   Shop #: WSC 00066 000 00000
   VCID: B3265651D26A01DEC7-80E6

1 Fault Found:
02635 - Tuner Not Enabled/Activated 
            000 -  - 
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 7
                    Fault Frequency: 3
                    Reset counter: 145
                    Mileage: 112434 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 04:40:00


-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 1K0-909-605.lbl
   Part No SW: 1K0 909 605 AB    HW: 1K0 909 605 AB
   Component: 6A AIRBAG VW8R  034 8000  
   Revision: 05034000    Serial number: 003B6M06XJN.  
   Coding: 0013889
   Shop #: WSC 00066 000 00000
   VCID: EC948D2DCFD49E26C6-80B8

   Subsystem 1 - Part No: 1K0 959 339 H
   Component: BF-Gewichtsens. 007 0006

   Subsystem 2 - Serial number: 6332MSME3754603CB

   Subsystem 3 - Serial number: 6342MSME3E136E57P

   Subsystem 4 - Serial number: 6351HSME181B37198

   Subsystem 5 - Serial number: 6361HSME18005150V

   Subsystem 6 - Serial number: 63727SME133B4348/

   Subsystem 7 - Serial number: 63827SME16385A475

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel        Labels: 1K0-953-549-MY8.lbl
   Part No SW: 1K0 953 549 BR    HW: 1K0 953 549 BR
   Component: J0527           051 0101  
   Coding: 0010021
   Shop #: WSC 00066 000 00000
   VCID: 8346C691C24A715E17-80D6

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: 1K0-920-xxx-17.lbl
   Part No SW: 1K0 920 954 S    HW: 1K0 920 954 S
   Component: KOMBIINSTRUMENT 3HL 1222  
   Revision: V0003000    Serial number: VWX7Z0H82490CJ
   Coding: 0023203
   Shop #: WSC 00066 000 00000
   VCID: BC347D6DFF34CEA616-80E8

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels:. 1K0-907-530-V3.clb
   Part No SW: 1K0 907 530 Q    HW: 1K0 907 951 
   Component: J533  Gateway   H07 5063  
   Revision:   H07 01    Serial number: 110808F2001704
   Coding: ED807F070003021002
   Shop #: WSC 00066 000 00000
   VCID: B5226849DC1E1FEEE9-80E0

No fault code found.

-------------------------------------------------------------------------------
Address 25: Immobilizer        Labels: 1K0-920-xxx-25.clb
   Part No SW: 1K0 920 954 S    HW: 1K0 920 954 S
   Component: IMMO            3HL 1222  
   Revision: V0003000    Serial number: VWX7Z0H82490CJ
   Shop #: WSC 00000 000 00000
   VCID: BC347D6DFF34CEA616-80E8

No fault code found.

-------------------------------------------------------------------------------
Address 42: Door Elect, Driver        Labels:. 1K0-959-701-MIN3.clb
   Part No SW: 1K0 959 701 AC    HW: 1K0 959 793 N
   Component: J386  TUER-SG FT    1519  
   Revision: 72009005    Serial number: 00000930288918
   Coding: 0001205
   Shop #: WSC 00066 000 00000
   VCID: EFAE9A21FEC2653EE3-80BA

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist        Labels: 1K0-909-14x-GEN3.clb
   Part No: 1K0 909 144 C
   Component: EPS_ZFLS Kl. 70     2301  
   Revision: 00H15000    
   Shop #: WSC 02069 000 90108
   VCID: AA184B3505A0401674-80FE

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels:. 1K0-959-433-MAX.clb
   Part No SW: 1K0 959 433 CT    HW: 1K0 959 433 CT
   Component:    KSG PQ35 RDK 052 0221  
   Revision: 00052000    Serial number: 00000000000000
   Coding: 13900F880186083F2904058FB0880F0488DCA0
   Shop #: WSC 00066 123 12345
   VCID: 8444C58DC74476662E-80D0

   Subsystem 1 - Component:   Sounder n.mounted     

   Subsystem 2 - Component:       NGS n.mounted     

   Subsystem 3 - Component:      IRUE n.mounted     

No fault code found.

-------------------------------------------------------------------------------
Address 52: Door Elect, Pass.        Labels:. 1K0-959-702-MIN3.clb
   Part No SW: 1K0 959 702 AC    HW: 1K0 959 792 N
   Component: J387  TUER-SG BT    1519  
   Revision: 72009005    Serial number: 08072219015504
   Coding: 0001204
   Shop #: WSC 00066 000 00000
   VCID: F0AC995DE3FC7AC6FA-80A4

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio        Labels: 1K0-035-1xx-56.lbl
   Part No SW: 1K0 035 180 L    HW: 1K0 035 180 L
   Component: Radio DE2       016 0020  
   Revision: 00016000    Serial number: VWZ4Z7H2235658
   Coding: 0010401
   Shop #: WSC 00000 000 00000
   VCID: A91AB43900A64B0E7D-80FC

No fault code found.

-------------------------------------------------------------------------------
Address 62: Door, Rear Left        Labels:. 1K0-959-703-GEN3.clb
   Part No SW: 1K0 959 703 AH    HW: 1K0 959 795 T
   Component: J388   TUER-SG HL   1401  
   Revision: 12006001    Serial number: 00000003423898
   Coding: 0001168
   Shop #: WSC 00066 000 00000
   VCID: F6A0AF45819854F620-80A2

No fault code found.

-------------------------------------------------------------------------------
Address 65: Tire Pressure        Labels: 3C0-959-433-65.lbl
   Part No SW: 1K0 959 433 CT    HW: 1K0 959 433 CT
   Component:    RDK              0450  
   Revision: 00052000    Serial number: 00000000000000
   Coding: 0100101
   Shop #: WSC 00066 000 00000
   VCID: 8444C58DC74476662E-80D0

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right        Labels:. 1K0-959-704-GEN3.clb
   Part No SW: 1K0 959 704 AH    HW: 1K0 959 794 T
   Component: J389   TUER-SG HR   1401  
   Revision: 12006001    Serial number: 00000003465808
   Coding: 0001168
   Shop #: WSC 00066 000 00000
   VCID: F7BEA24186922DFE3B-80A2

No fault code found.

End----------(Elapsed Time: 02:01, VBatt start/end: 12.1V/12.2V)-----------
 
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   #4  

otto

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Sorry - but here is a quick rundown which has lead up to my post: I did have a P0456 code in September 2017. I replaced the Leak Diagnosis Pump because it was leaking. Now with this code (P0456) I replaced the gas cap with a genuine VW cap in early October 2017. Now here in November 2017 the same code has returned - which is the P0456 (again). Trying to take care of this EVAP thing once and for all.

The car tested is a 2009 (MK5) Jetta sedan 2.5l
 
   #5  

Uwe

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Leak Detection Test on this ECU should be:
Cold Engine at idle:
Basic Settings, Group 202.
Allow engine to idle until:
Field 4 Displays: xxxxxx100
If the test does not start, loosen/ refasten the gas cap.

FWIW, if I were a betting man, I'd put my money on a faulty N80 valve.

-Uwe-
 
   #6  

otto

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I was thinking the same thing.

Thx
 
   #7  

Jack@European_Parts

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Part No SW: 07K 906 055 P HW: 07K 906 055 M
Component: 2,5l R5/4V G 9205 <<<<<<<<<<<<<<<<<<<<<<<<<<< A firmware update of Z105 or higher is needed!
Revision: G6H02--- Serial number: VWX7Z0H82490CJ
Coding: 0000075

Hold the phone here.............don't spend money yet as you already have!
I show this controller requiring multiple SVM sessions........

This is a 2.5 NA, with an assisted mechanical cam driven vacuum pump & that likes to fail.

If insufficient vacuum produced as a result of this pump, the LDP circuit will suffer a loss & not be able to pump the tank completely.

Before changing the N80 which Uwe put money on & indeed is a good bet, let's do a test by crimping the line to it and then run 0x01-04-071 in VCDS further to see if the pump makes the LDP achieved PSI to check the tank leak.

Isolation is key.........

Please see the links.

http://forums.ross-tech.com/showthread.php?3147-What-is-Jack-talking-about-0x01-08-000

JPPSG

http://forums.ross-tech.com/showthr...essional-Problem-Solver-Guide-quot-JPPSG-quot
 
   #8  

otto

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When I run the 0x01-04-071 in VCDS to see if the pump makes the LDP achieved PSI to check the tank leak. What am I exactly looking for in VCDS?
 
   #9  

Jack@European_Parts

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"LDP ok" in fourth field but it will show you other data in fields if logged and observed.
 
   #10  

otto

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OK, I believe I understand. This (pressure) test will tell me if the pump I installed is doing its job as far as pressurizing the gas tank for leaks etc...
 
   #11  

Jack@European_Parts

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OK, I believe I understand. This (pressure) test will tell me if the pump I installed is doing its job as far as pressurizing the gas tank for leaks etc...


Affirmative but the vacuum pump on the engine or auxiliary vacuum pump if supported, "if deficient" for supplied vacuum can cause this LDP pump to not function properly.

A good test is to crimp off the N80 and use a mechanical pump such as a mighty vac to supply the LDP with sufficient monitored vacuum.





 
   #12  

Jack@European_Parts

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Oh and I am willing to bet that your LDP was not bad ............I have yet to find a bad one as tested, unless due to collision damage.
 
   #13  

otto

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I replaced it because when I ran a smoke test it was leaking.
 
   #14  

Jack@European_Parts

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I replaced it because when I ran a smoke test it was leaking.

I'm interested.......... :D
Please explain how the smoke test was done and how it showed evidence of a failure of the LDP?
What failed exactly?

:popcorn:
 
   #15  

otto

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Connected a smoke machine in the engine compartment area. Ran the machine and smoke leaked out of the LDP.
 
   #16  

Jack@European_Parts

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Connected a smoke machine in the engine compartment area. Ran the machine and smoke leaked out of the LDP.

Interesting.........



Where did smoke come out on LDP .......the filter, the reed, a line, pump diaphragm or the case being cracked?

Any pictures of old unit and verified damage?

What line under hood did you use to inject smoke and was it under PSI or just static distribution?
 
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   #17  

otto

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On the LDP - it was leaking from the pump filter.
 
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