2003 vw golf Poor idle

   #1  

Pablo j

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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 Tõrsteuer.FS KLO 0202  

   Subsystem 2 - Part No: 1C2959801A
   Component: 1X Tõrsteuer.BF KLO 0202  

   Subsystem 3 - Part No: 1C0959811A
   Component: 1X Tõrsteuer.HL KLO 0202  

   Subsystem 4 - Part No: 1C0959812A
   Component: 1X Tõrsteuer.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)-----
 
   #3  

Jef

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You might find this information helpful as well:

 
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   #4  

Danners74

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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.
 
   #5  

Jack@European_Parts

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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?
 
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