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Thread: 2003 vw golf Poor idle

  1. #1
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    2003 vw golf Poor idle

    hi,we have had this car in our workshop for a service , when it arrived the eml indicated a fault p0405 egr excessive flow ( not using a vdcs ) during the service the throttle body was cleaned as was the egr valve .upon restarting the epc warning light was on and the eml . i had a quick look on the net and seen posts about resetting the throttle and egr which i did but with no change to the poor idle . i also carried out a reset of the stored values followed by a reset of the throttle and egr . i have tried a different map sensor with no change and tested for an air leak around the manifold but i was unable to find a cause . I hope someone here has the answer or will be able to point me in the right direction.


    Code:
    Friday,21,February,2020,18:06:40:42129
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 10 x64
    VCDS Version: 19.6.2.0 (x64)  HEX-V2 CB: 0.4508.4
    Data version: 20190930 DS308.0
    www.Ross-Tech.com
    
    
    
    
    Chassis Type: 1J (1J - VW Golf/Bora IV (1998 > 2006))
    Scan: 01 02 03 08 15 16 17 19 22 29 35 36 37 39 46 47 55 56 57 75
              76
     
    VIN: WVWZZZ1JZ4D094820   Mileage: 303520km-188598miles
    -------------------------------------------------------------------------------
    Address 01: Engine        Labels: 036-906-034-AZD.clb
       Part No: 036 906 034 DR
       Component:  MARELLI 4MV        5163  
       Coding: 00031
       Shop #: WSC 00659  
       VCID: 6597B24B7C7B8F3F5A1-4B5C
       WVWZZZ1JZ4D094820     VWZ7Z0C8450361
    
    2 Faults Found:
    17961 - Barometric / Manifold Pressure Signals 
                P1553 - 35-00 - Implausible Correlation
    17912 - Intake Air System 
                P1504 - 35-10 - Leak Detected - Intermittent
    Readiness: 1010 0101
    
    -------------------------------------------------------------------------------
    Address 03: ABS Brakes        Labels: 1C0-907-37x-ESP-F.lbl
       Part No: 1C0 907 379 M
       Component: ESP FRONT MK60      0102  
       Coding: 0011266
       Shop #: WSC 31414 000 00000
       VCID: 34311F0F822126B71DF-5184
    
    1 Fault Found:
    01314 - Engine Control Module 
                013 - Check DTC Memory - Intermittent
    
    -------------------------------------------------------------------------------
    Address 15: Airbags        Labels: 6Q0-909-605-VW5.lbl
       Part No: 1C0 909 605 A
       Component: 27 AIRBAG VW51 01   0008  
       Coding: 12855
       Shop #: WSC 31414  
       VCID: 221DE9572DD5B807FF3-513C
    
    No fault code found.
    
    -------------------------------------------------------------------------------
    Address 17: Instruments        Labels: 1J0-920-xx5-17.lbl
       Part No: 1J0 920 926 A
       Component: KOMBI+WEGFAHRSP VDO V20  
       Coding: 01413
       Shop #: WSC 00000  
       VCID: 2809FB7F4BE95257A17-513C
       WVWZZZ1JZ4D094820     VWZ7Z0C8450361
    
    2 Faults Found:
    01039 - Coolant Temperature Sensor (G2) 
                30-10 - Open or Short to Plus - Intermittent
    01336 - Company Data Bus for Comfort System 
                80-10 - Single-Wire Operation - Intermittent
    
    -------------------------------------------------------------------------------
    Address 19: CAN Gateway        Labels: 6N0-909-901-19.lbl
       Part No: 6N0 909 901 
       Component: Gateway K<->CAN    0001  
       Coding: 00006
       Shop #: WSC 31414  
       VCID: 70B9D31FB3B95A97397-513C
    
    1 Fault Found:
    01336 - Company Data Bus for Comfort System 
                80-10 - Single-Wire Operation - Intermittent
    
    -------------------------------------------------------------------------------
    Address 46: Central Conv.        Labels: 1C0-959-799.lbl
       Part No: 1C0 959 799 B
       Component: 1X Komfortgerát HLO 0003  
       Coding: 00258
       Shop #: WSC 31414  
       VCID: 36352507915D34A723B-4B1E
    
       Subsystem 1 - Part No: 1C2959802A
       Component: 1X Tőrsteuer.FS KLO 0202  
    
       Subsystem 2 - Part No: 1C2959801A
       Component: 1X Tőrsteuer.BF KLO 0202  
    
       Subsystem 3 - Part No: 1C0959811A
       Component: 1X Tőrsteuer.HL KLO 0202  
    
       Subsystem 4 - Part No: 1C0959812A
       Component: 1X Tőrsteuer.HR KLO 0202  
    
    2 Faults Found:
    01135 - Interior Monitoring Sensors 
                36-00 - Open Circuit
    00928 - Locking Module for Central Locking; Front Driver Side (F220) 
                27-10 - Implausible Signal - Intermittent
    
    End----(Elapsed Time: 05:09, VBatt start/end: 11.8V/11.8V. VIgn 11.8V)-----

  2. #2
    NostraJackAss Jack@European_Parts's Avatar
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    Maybe the leak is on PCV side or via N80 or booster circuit?

    Did you try isolating for leaks by crimps & to see if you can vacate the correlation DTC?

    Ever see this thread in sticky area?

    https://forums.ross-tech.com/showthr...ou!-Air-leaks!
    European Parts Emporium/Performance / Immobilizer Solutions EPE
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    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
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  4. #3
    Ross-Tech Employee Jef's Avatar
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    You might find this information helpful as well:

    Jef
    Ross Tech Support Team, Alpha Squad
    Auto-Scan, learn it, love it, live it... then check the fuses.

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  6. #4
    Verified VCDS User Danners74's Avatar
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    Evening.....my experience with these you'll have a map sensor depending on engine size/code. You have what I would call star ship mileage on that old girl. Early ones on throttle body adaption with age youd end up replacing engine ecu because it wouldnt take the adaption.

    The pipework from egr to throttle body base plate can get blocked....clean as required.

    The other way Is readapt both with engine warm- lock the car and leave for 30 mins. Retry. It has worked on some. May disconnect battery for 30 mins that may reset.

    Failing that potential EGR issue are not uncommon or throttle body.

  7. #5
    NostraJackAss Jack@European_Parts's Avatar
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    Evening.....my experience with these you'll have a map sensor depending on engine size/code. You have what I would call star ship mileage on that old girl. Early ones on throttle body adaption with age youd end up replacing engine ecu because it wouldnt take the adaption.

    The pipework from egr to throttle body base plate can get blocked....clean as required.

    The other way Is readapt both with engine warm- lock the car and leave for 30 mins. Retry. It has worked on some. May disconnect battery for 30 mins that may reset.

    Failing that potential EGR issue are not uncommon or throttle body.
    Agreed............

    Hey did you know these cars are like the ABA in the USA with a TV and the TV must move back 5 MM before it can commence forward to count the idle control stepper position?

    Is the throttle cable too tight and causing the adaption to fail?

    Did you try lubing the TV plate and make sure it moves backward first by massaging it & to see the zero marker of stepper is possible seeing if cable is running any interference?
    European Parts Emporium/Performance / Immobilizer Solutions EPE
    Certified Master Trained NY/BAR/BAD 7076062/ASE/SAE/NASTF Legal Factory Authorized/Licensed GeKo/FaZit # 403738
    Specializing in Custom Services IE: "welding-fabrication" / EPA-SMOG Update or Pass-Thru-Programming / Data Transfer / Immobilizers & OEM Quality Parts
    Above Magic! No Written record, AUTO-SCAN or Appointment = NO HELP!
    www.FixMyEuro.com <<<<<CLICK HERE! or vwemporium@aol.com ( JPPSG & Unverified members need not PM me & Please don't email or call facility for free tech support...use the forum )
    Getting you CONTROL again of your property - TAKE IT! In Conjunction with.........

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