faults codes for my seat leon tdi 150

[louma84]

just run a scan on my 04 plate seat leon tdi 150 using vcds lite, can came up with the following -

VCDS-Lite Version: Release 1.1
Thursday, 01 November 2012, 20:52:00.


Chassis Type: 1M - Seat Leon/Toledo
Scan: 01,02,03,08,15,17,19,22,35,36,37,46,56

-------------------------------------------------------------------------------
Address 01: Engine Labels: 038-906-019-ARL.LBL
Controller: 038 906 019 KG
Component: 1,9l R4 EDC 0000SG 5342
Coding: 00002
Shop #: WSC 06402

1 Fault Found:
17058 - Cylinder 4 Glow Plug Circuit (Q13): Electrical Fault
P0674 - 35-10 - - - Intermittent
Readiness: N/A

-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 1C0-907-37x-ASR.LBL
Controller: 1C0 907 379 K
Component: ASR FRONT MK60 0103
Coding: 0022017
Shop #: WSC 00001
VCID: 321799CBED21
No fault code found.


Im going to replace all the glow plug tommorrow but does anyone know what the address 3 is with the ABS Brakes??? as there is no fault codes found?

cheers louis

 

[Muttley]

The glow plug fault may be poor contact with the harness - check for corrosion or a loose contact. If it is the plug, reckon on changing the all, as once one goes the others follow.

 

[louma84]

cheers matey, im replacing all plugs tomorrow then ill clear the fault code and see if it returns. Any ideas about the abs??

 

[Muttley]

It says "No fault code found" and I'd take that at face value - no faults logged.

Are those the only two modules that were listed? Even VCDS-Lite should list a lot more. I've only got VCDS-Lite, although I've registered mine so I could remove the autolock and set the EGR to minimum.

I had a similar fault not so long ago - it was cylinder 2 on mine - and simply replacing all the plugs did it for me. The code went away and has not come back. I did have to get hold of a deep 10mm socket, some 3/8 extension bars and a low-torque torque wrench. You need 15Nm for the glow plugs and and you want to make sure they are properly tightened but not rip the threads out of the head. I used a smear of copperslip on the upper part of the thread, avoiding the sealing face or it would affect the torque setting. I found that removing one of the fixing bolts for the boost pipe that goes across the front of the engine made it much easier to get no.3 out. It was still cheaper than having it done in a dealer.

 

[louma84]

hey muttley yeh that was the only two things displayed on the 'auto scan' mode . I replaced all the plugs today and reset the eml , fingers crossed it hasnt come back yet

Btw what does the EGR do?

 

[Muttley]

That's a very big question.

EGR is a system that recirculates exhaust gas (which is inert, in that all the oxygen in it has been used up already, at least that's the theory) into the inlet at certain engine demands, with the intention of reducing NOx formation. There's a long bit of physical chemistry I could go into to explain how this is supposed to work.

The problem is that exhaust gas is also hot and sooty. This combines with the oily crankcase vapours in the inlet charge (introduced by the PCV system) to form carbonised sludge that hardens in the inlet manifold, eventually choking it, and causing the EGR system to become faulty.

VCDS allows you to turn the amount of exhaust gas that's recirculated down to a minimum (not off, but to a small proportion of the original). which reduces the sludge formation a great deal. The setting is "for off-road use only", but NOx formation isn't tested at MOT so there is no problem there.

There's a lot of controversy over NOx reduction in any case, many experts believe that the case for NOx as a pollutant is far from proven, and California is simply prejudiced against efficient diesel engines.