Bah! Engine management light on!

[Avocet]

Oh well it had to happen sooner or later!  Mrs. Avocet got in it yesterday (I was away).  Started it up from cold and the engine management light came on.  Fortunately, son was home, so he gave her a lift in his car.  (And a load of cheek about how much better his 30 year old car was than her Kodiaq)!🤣

I stuck my trusty OBD11 fault code reader in it when I got home.  it said:

P067300 - Cylinder 3 Glow Plug Circuit  static

 

Any thoughts, please?  I cleared the code, started it up, and it didn't come back on.  Car drives fine.  Does anyone know whether that code means there's no electrical supply to that glow plug, or whether it means the glow plug itself is faulty?  If the latter, how hard is it to swap a glow plug?  (2.0 150 diesel, 2017, 50,000 miles).

[Paws4Thot]

1 hour ago, Avocet said:

I cleared the code, started it up, and it didn't come back on.  Car drives fine.

If the fault doesn't recur, treat it as a "ghost code".

[brettikivi]

^^ this. Always clear it once, and if it recurs, you may actually have an issue.

[Avocet]

Thanks both.  Didn't do it today.  Fingers crossed!

[Avocet]

Oh well... it's back...😒

Any suggestions as to what to look for first, please?

[skomaz]

At a guess you've got a knackered glow plug that isn't heating at all...   Based on the assumption that the ECU monitors current draw and hence can tell if it's open circuit and not heating (hence static)??

 

If you can get at them you can measure the resistance across them between the contact and the engine block to check.

Edited Friday at 08:16 by skomaz

[Avocet]

Thanks.  I'll have a go at that this weekend.  I think it's quite easy to get to them.

[26DIPP]

If you can do it yourself, a glow plug change is not a big deal. Quick and cheap.

Edited Friday at 09:57 by 26DIPP

[Avocet]

OK< it's the expensive one...  All the others are around 1 Ohm, and this one is over 8.  Apparently 6 is the limit.  So I'm  looking for No. 3 glowplug (the one with the pressure sensor)  for a 2017 Kodiaq 2.0 (150) (DSG 4x4 if that makes a difference).

Does anyone have any recommendations, please?