Would a faulty glow plug bring on the engine management light?

[stevo2603]

My engine management light came on the other day and today was the first day I could get my car put on a diagnostics machine. The fault found was with one of the glow plugs, so I've now ordered a new set of glow plugs.

Would a faulty glow plug bring on the engine management light?

I didn't think that it would, as I've changed faulty glow plugs before on a car and they hadn't brought on the engine management light.


Steven

 

[oldman]

i think it does yes as thats how i knew one of mine had gone
light = scan = code = fix

 

[stevo2603]

Thanks for the help. I thought I'd better check on here just in case there was another fault that was somehow not picked up.

 

[Calyx]

Yes it does. If you can scan it on VagCom it will tell you the cylinder its affecting as well. This happened to me:

17057/P0673/001651 - Cylinder 3 Glow Plug Circuit (Q12): Electrical Fault
Possible Symptoms

* No Pre-Glow Period
* Poor Cold Starting

Possible Causes

* Glow Plug Wiring faulty
* Glow Plug faulty

Possible Solutions

* Check Glow Plug Wiring
* Check Glow Plug

 

[stevo2603]

The diagnostics machine used told them it was cylinder 1 that was affected. So I know what one needs changed, but I'm going to change them all to save any hassle.

 

[Cupra TDI 150]

This happened to mine originally it was cylinder 3 so changed all 4, now 5 months later cylinde 2 is showing up the fault? Can't be a faulty plug as it only 5 months old

 

[oldman]

it will be the harness now
there is a long thread on this in the tdi section that covers this complete with guides and aprt numbers

1st time = change plugs
2nd time = change harness
never had an issue yet and i did the harness myself & garage the plugs.

 

[seantdi]

be very carefull if you are changing the plugs yourself. one of mine started spinning on the threads coming out.. cost me over 500 euro in the end