High/Rough Idle? What next?? Help me please....

marshyc

Full Member
Mar 12, 2006
299
0
Huddersfield
A couple of weeks ago I had the MIL light come on, checked with VAG-COM and got this.

Code:
Monday,29,September,2008,14:46:25:56652
VCDS Version: Release 805.0
Data version: 20080529



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


Chassis Type: 1M - Seat Leon/Toledo
Scan: 01 02 03 08 15 17 19 22 35 36 37 46 56
 
VIN: VSSZZZ1MZ3R100656   Mileage: 119710km/74384miles
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 06A-906-032-AJQ.lbl
   Part No: 06A 906 032 MJ
   Component: 1.8L R4/5VT         0003  
   Coding: 11510
   Shop #: WSC 13622  
   VSSZZZ1MZ3R100656     SEZ7Z0C1913309

2 Faults Found:
16955 - Brake Switch (F): Implausible Signal 
            P0571 - 35-10 -  -  - Intermittent
17544 - Fuel Trim: Bank 1 (Add): System too Lean 
            P1136 - 35-00 -  - 
Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 1C0-907-37x-ASR.lbl
   Part No: 1C0 907 379 K
   Component: ASR FRONT MK60      0103  
   Coding: 0022017
   Shop #: WSC 00001 001 00001

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 1M0-820-043.lbl
   Part No: 1M0 820 043 D
   Component: 1M-CLIMATRONIC    X0605  
   Coding: 00041
   Shop #: WSC 06402  

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 6Q0-909-605-VW5.lbl
   Part No: 1C0 909 605 A
   Component: 39 AIRBAG VW51 0A   0006  
   Coding: 13113
   Shop #: WSC 06402  

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: Redir Fail!
   Part No: 1M0 920 922 F
   Component: KOMBI+WEGFAHRSP VDO V03  
   Coding: 05424
   Shop #: WSC 00000  
   VSSZZZ1MZ3R100656     SEZ7Z0C1913309

1 Fault Found:
00562 - Sensor for Oil Level/Temperature (G266) 
            29-00 - Short to Ground

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels: 6N0-909-901.lbl
   Part No: 6N0 909 901 
   Component: Gateway K<->CAN    0001  
   Coding: 00006
   Shop #: WSC 06402  

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels: 1C0-959-799.lbl
   Part No: 1C0 959 799 F
   Component: A7 Komfortgerát HLO 0003  
   Coding: 00258
   Shop #: WSC 06402  

   Part No: 1C2959802A
   Component: A7 Tõrsteuer.FS KLO 0009  

   Part No: 1C2959801A
   Component: A7 Tõrsteuer.BF KLO 0009  

   Part No: 1C0959811A
   Component: A7 Tõrsteuer.HL KLO 0009  

   Part No: 1C0959812A
   Component: A7 Tõrsteuer.HR KLO 0009  

1 Fault Found:
01135 - Interior Monitoring Sensors 
            36-00 - Open Circuit

End   ---------------------------------------------------------------------

Did a search on 17544 and found out about the breather pipe. When I removed the engine cover this pipe was split so I replaced it but this did not cure my problems.

I did another VAG-COM check and got this.

Code:
Tuesday,07,October,2008,15:02:37:56652
VCDS Version: Release 805.1
Data version: 20080823



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


Chassis Type: 1M - Seat Leon/Toledo
Scan: 01 02 03 08 15 17 19 22 35 36 37 46 56
 
VIN: VSSZZZ1MZ3R100656   Mileage: 120270km/74732miles
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 06A-906-032-AJQ.lbl
   Part No: 06A 906 032 MJ
   Component: 1.8L R4/5VT         0003  
   Coding: 11510
   Shop #: WSC 13622  
   VSSZZZ1MZ3R100656     SEZ7Z0C1913309

2 Faults Found:
17544 - Fuel Trim: Bank 1 (Add): System too Lean 
            P1136 - 35-00 -  - 
16891 - Idle Control System RPM: Higher than Expected. 
            P0507 - 35-10 -  -  - Intermittent
Readiness: 0010 1001

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 1C0-907-37x-ASR.lbl
   Part No: 1C0 907 379 K
   Component: ASR FRONT MK60      0103  
   Coding: 0022017
   Shop #: WSC 00001 001 00001

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 1M0-820-043.lbl
   Part No: 1M0 820 043 D
   Component: 1M-CLIMATRONIC    X0605  
   Coding: 00041
   Shop #: WSC 06402  

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 6Q0-909-605-VW5.lbl
   Part No: 1C0 909 605 A
   Component: 39 AIRBAG VW51 0A   0006  
   Coding: 13113
   Shop #: WSC 06402  

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: Redir Fail!
   Part No: 1M0 920 922 F
   Component: KOMBI+WEGFAHRSP VDO V03  
   Coding: 05424
   Shop #: WSC 00000  
   VSSZZZ1MZ3R100656     SEZ7Z0C1913309

1 Fault Found:
00562 - Sensor for Oil Level/Temperature (G266) 
            29-00 - Short to Ground

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels: 6N0-909-901-19.lbl
   Part No: 6N0 909 901 
   Component: Gateway K<->CAN    0001  
   Coding: 00006
   Shop #: WSC 06402  

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels: 1C0-959-799.lbl
   Part No: 1C0 959 799 F
   Component: A7 Komfortgerát HLO 0003  
   Coding: 00258
   Shop #: WSC 06402  

   Part No: 1C2959802A
   Component: A7 Tõrsteuer.FS KLO 0009  

   Part No: 1C2959801A
   Component: A7 Tõrsteuer.BF KLO 0009  

   Part No: 1C0959811A
   Component: A7 Tõrsteuer.HL KLO 0009  

   Part No: 1C0959812A
   Component: A7 Tõrsteuer.HR KLO 0009  

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio        Labels: 1J0-035-18x-56.lbl
   Part No: 1M0 035 186 F
   Component:  Radio             0001   
   Coding: 00403
   Shop #: WSC 06402  

1 Fault Found:
00855 - Connection to CD changer 
            49-00 - No Communications

End   ---------------------------------------------------------------------

After this I checked searched on the new 16891 fault and found out about the throttle body. This was cleaned and replaced but again did not solve my problems.

Another VAG-COM check after this.

Code:
Sunday,12,October,2008,15:40:23:56652
VCDS Version: Release 805.1
Data version: 20080823



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


Chassis Type: 1M - Seat Leon/Toledo
Scan: 01 02 03 08 15 17 19 22 35 36 37 46 56
 
VIN: VSSZZZ1MZ3R100656   Mileage: 120520km/74887miles
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 06A-906-032-AJQ.lbl
   Part No: 06A 906 032 MJ
   Component: 1.8L R4/5VT         0003  
   Coding: 11510
   Shop #: WSC 13622  
   VSSZZZ1MZ3R100656     SEZ7Z0C1913309

3 Faults Found:
17544 - Fuel Trim: Bank 1 (Add): System too Lean 
            P1136 - 35-00 -  - 
16891 - Idle Control System RPM: Higher than Expected. 
            P0507 - 35-10 -  -  - Intermittent
16486 - Mass Air Flow Sensor (G70): Signal too Low 
            P0102 - 35-10 -  -  - Intermittent
Readiness: 0000 0001

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 1C0-907-37x-ASR.lbl
   Part No: 1C0 907 379 K
   Component: ASR FRONT MK60      0103  
   Coding: 0022017
   Shop #: WSC 00001 001 00001

1 Fault Found:
01314 - Engine Control Module 
            013 - Check DTC Memory - Intermittent

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 1M0-820-043.lbl
   Part No: 1M0 820 043 D
   Component: 1M-CLIMATRONIC    X0605  
   Coding: 00041
   Shop #: WSC 06402  

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 6Q0-909-605-VW5.lbl
   Part No: 1C0 909 605 A
   Component: 39 AIRBAG VW51 0A   0006  
   Coding: 13113
   Shop #: WSC 06402  

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: Redir Fail!
   Part No: 1M0 920 922 F
   Component: KOMBI+WEGFAHRSP VDO V03  
   Coding: 05424
   Shop #: WSC 00000  
   VSSZZZ1MZ3R100656     SEZ7Z0C1913309

2 Faults Found:
00562 - Sensor for Oil Level/Temperature (G266) 
            30-10 - Open or Short to Plus - Intermittent
00562 - Sensor for Oil Level/Temperature (G266) 
            29-00 - Short to Ground

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels: 6N0-909-901-19.lbl
   Part No: 6N0 909 901 
   Component: Gateway K<->CAN    0001  
   Coding: 00006
   Shop #: WSC 06402  

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels: 1C0-959-799.lbl
   Part No: 1C0 959 799 F
   Component: A7 Komfortgerát HLO 0003  
   Coding: 00258
   Shop #: WSC 06402  

   Part No: 1C2959802A
   Component: A7 Tõrsteuer.FS KLO 0009  

   Part No: 1C2959801A
   Component: A7 Tõrsteuer.BF KLO 0009  

   Part No: 1C0959811A
   Component: A7 Tõrsteuer.HL KLO 0009  

   Part No: 1C0959812A
   Component: A7 Tõrsteuer.HR KLO 0009  

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio        Labels: 1J0-035-18x-56.lbl
   Part No: 1M0 035 186 F
   Component:  Radio             0001   
   Coding: 00403
   Shop #: WSC 06402  

1 Fault Found:
00855 - Connection to CD changer 
            49-00 - No Communications

End   ---------------------------------------------------------------------

Ignore the MAF fault I unplugged it when it was idling rough.

After this I have had the car idling at 1000+ RPM after trying to idle at the normal level but almost cutting out. The car does pull better now the throttle body has been cleaned and drives spot on, it is just the tick over that is not right. Unplugging MAF did seem to smooth it out but just wanted to eliminate any other issues before going for MAF and spending £70 odd.

I have just reset ECU tonight and after putting battery lead back on I went for a good 20 minute drive but the problem is still there. No MIL light at mo but will no doubt be on in a day or two. Will do another VAG-COM check then and post results.

Can anyone help?
 
Last edited:

marshyc

Full Member
Mar 12, 2006
299
0
Huddersfield
Cheers.

Will check them when weather next ok.

Also noticed that throttle can not be held steady. By this I mean if you apply gentle pressure to the throttle pedal the revs suddenly start to rise and if you ease off the revs just suddenly stop going up and start to fall. I can not get it to hold at say 1500/2000 revs it either goes up or down. There is no neutral point.

Could this be caused by a vac leak?
 

marshyc

Full Member
Mar 12, 2006
299
0
Huddersfield
Latest VAG-COM log. Still not had chance to check pipes yet though.
Code:
Sunday,19,October,2008,18:37:59:56652
VCDS Version: Release 805.1
Data version: 20081017



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


Chassis Type: 1M - Seat Leon/Toledo
Scan: 01 02 03 08 15 17 19 22 35 36 37 46 56
 
VIN: VSSZZZ1MZ3R100656   Mileage: 120880km/75111miles
-------------------------------------------------------------------------------
Address 01: Engine        Labels: 06A-906-032-AJQ.lbl
   Part No: 06A 906 032 MJ
   Component: 1.8L R4/5VT         0003  
   Coding: 11510
   Shop #: WSC 13622  
   VSSZZZ1MZ3R100656     SEZ7Z0C1913309

4 Faults Found:
16514 - Oxygen (Lambda) Sensor B1 S1: Malfunction in Circuit 
            P0130 - 35-10 -  -  - Intermittent
17544 - Fuel Trim: Bank 1 (Add): System too Lean 
            P1136 - 35-00 -  - 
16891 - Idle Control System RPM: Higher than Expected. 
            P0507 - 35-10 -  -  - Intermittent
18010 - Power Supply Terminal 30: Voltage too Low 
            P1602 - 35-10 -  -  - Intermittent
Readiness: 0000 0101

-------------------------------------------------------------------------------
Address 03: ABS Brakes        Labels: 1C0-907-37x-ASR.lbl
   Part No: 1C0 907 379 K
   Component: ASR FRONT MK60      0103  
   Coding: 0022017
   Shop #: WSC 00001 001 00001

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC        Labels: 1M0-820-043.lbl
   Part No: 1M0 820 043 D
   Component: 1M-CLIMATRONIC    X0605  
   Coding: 00041
   Shop #: WSC 06402  

No fault code found.

-------------------------------------------------------------------------------
Address 15: Airbags        Labels: 6Q0-909-605-VW5.lbl
   Part No: 1C0 909 605 A
   Component: 39 AIRBAG VW51 0A   0006  
   Coding: 13113
   Shop #: WSC 06402  

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments        Labels: Redir Fail!
   Part No: 1M0 920 922 F
   Component: KOMBI+WEGFAHRSP VDO V03  
   Coding: 05424
   Shop #: WSC 00000  
   VSSZZZ1MZ3R100656     SEZ7Z0C1913309

2 Faults Found:
00562 - Sensor for Oil Level/Temperature (G266) 
            30-10 - Open or Short to Plus - Intermittent
00562 - Sensor for Oil Level/Temperature (G266) 
            29-00 - Short to Ground

-------------------------------------------------------------------------------
Address 19: CAN Gateway        Labels: 6N0-909-901-19.lbl
   Part No: 6N0 909 901 
   Component: Gateway K<->CAN    0001  
   Coding: 00006
   Shop #: WSC 06402  

No fault code found.

-------------------------------------------------------------------------------
Address 46: Central Conv.        Labels: 1C0-959-799.lbl
   Part No: 1C0 959 799 F
   Component: A7 Komfortgerát HLO 0003  
   Coding: 00258
   Shop #: WSC 06402  

   Part No: 1C2959802A
   Component: A7 Tõrsteuer.FS KLO 0009  

   Part No: 1C2959801A
   Component: A7 Tõrsteuer.BF KLO 0009  

   Part No: 1C0959811A
   Component: A7 Tõrsteuer.HL KLO 0009  

   Part No: 1C0959812A
   Component: A7 Tõrsteuer.HR KLO 0009  

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio        Labels: 1J0-035-18x-56.lbl
   Part No: 1M0 035 186 F
   Component:  Radio             0001   
   Coding: 00403
   Shop #: WSC 06402  

1 Fault Found:
00855 - Connection to CD changer 
            49-00 - No Communications

End   ---------------------------------------------------------------------
 

marshyc

Full Member
Mar 12, 2006
299
0
Huddersfield
I need HELP.......please

I have checked the pipes that I could see from above but not sure I really know what I am looking at or for.

Do I need to get under car and look too. How obvious would the split or leak be?

Can someone tell me which pipes I need to look at.

Had the 17544 fault code and found the breather pipe split. I replaced it but still getting the fault along with others.
 
Last edited:
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