Glow Plug error P0673 circuit malfunction cylinder 3

[OD1122]

Hello all,

I have a Leon FR 184 (68 plate)

I’ve had a Engine management light come on. The car had been getting steadily rougher to start and two days ago when it was about 4 degrees, the EML popped on when I started the car. I’ve scanned the code and I’m getting a P0673 - Glow Plug, Cylinder 3 - circuit malfunction error.

Does anyone have experience of this? Will it likely be the glow plug itself or something like a relay? Furthermore, which glow plugs have pressure sensors on them?

Thanks for your help!

 

[BillyCool]

Hello all,

I have a Leon FR 184 (68 plate)

I’ve had a Engine management light come on. The car had been getting steadily rougher to start and two days ago when it was about 4 degrees, the EML popped on when I started the car. I’ve scanned the code and I’m getting a P0673 - Glow Plug, Cylinder 3 - circuit malfunction error.

Does anyone have experience of this? Will it likely be the glow plug itself or something like a relay? Furthermore, which glow plugs have pressure sensors on them?

Thanks for your help!

I had a similar issue with my 14 plate 184 last year.

The whole slow cranking issue and associated glow plug problem has seen a variety of `solutions` and there seems to be no one singular answer.

I ended up:

• Replacing all 4 glow plugs - turns out my car did not have a pressure sensor. You can usually tell as the pressure sensor one is a lot fatter. No idea of your car does or does not have one
• Replaced glow plug relay - recommended to do at same time as glow plugs (that was an effort itself to identify and replace)
• New battery

Might be worth getting your connections checked as well jsut to make sure nothing is lose.

Wierdly, changing my glow plugs fixed the error code but not the slow crank. A change of battery fixed that and it's been much better since. The 184's seem to be a bit slow starting at times - I fine a decent pre-heat seems to help.

If you do have to replace glow plugs - they can be a real pain to get out. My garage get a guy in especially to do them and he still broke one and had to drill it out.

If I were you, I'd go for the cheaper options and check wiring and maybe chuck in a new battery?

Hope you get it sorted.

 

[OD1122]

I had a similar issue with my 14 plate 184 last year.

The whole slow cranking issue and associated glow plug problem has seen a variety of `solutions` and there seems to be no one singular answer.

I ended up:

• Replacing all 4 glow plugs - turns out my car did not have a pressure sensor. You can usually tell as the pressure sensor one is a lot fatter. No idea of your car does or does not have one
• Replaced glow plug relay - recommended to do at same time as glow plugs (that was an effort itself to identify and replace)
• New battery

Might be worth getting your connections checked as well jsut to make sure nothing is lose.

Wierdly, changing my glow plugs fixed the error code but not the slow crank. A change of battery fixed that and it's been much better since. The 184's seem to be a bit slow starting at times - I fine a decent pre-heat seems to help.

If you do have to replace glow plugs - they can be a real pain to get out. My garage get a guy in especially to do them and he still broke one and had to drill it out.

If I were you, I'd go for the cheaper options and check wiring and maybe chuck in a new battery?

Hope you get it sorted.

Thank you for that! Strangely my car is by and large running fine now apart from an odd surge every now and again. The slow crank has disappeared. It started up fine today and drove normally. I have it booked in with a SEAT independent specialist who charge extremely reasonable prices apparently and they said they would have a look in a weeks time. I'm starting to think it's hopefully something electrical rather than the glow plug itself. Even when the car is cold, my scanner app has picked up no misfires and the rest of the sensors MAF, oxygen etc seem perfectly fine.

With the battery I wonder if Stop-Start is killing it quicker?

 

[OD1122]

Just posting this in case people have this error in the future. So the garage has just fixed it. £200 fix.

Glow plug in cylinder 3 was bad and of course it was the pressure sensor glow plug. The mechanic said that if it was an EML light it would be the pressure sensor glow plug and if it had been 2 or more regular glow plugs, it would have thrown a glow plug light.