Glow Plug Fault

[Drive Blind]

Hi,

2016 Golf GTD

I'm getting the following error code. I've read and cleared the code once but it came back again 3 days later.

1 Fault Found:
4985 - Cylinder 2 Glow Plug Circuit (Q11) 
          P0672 00 [237] - Electrical Fault
          MIL ON - Confirmed - Tested Since Memory Clear


                    Engine speed: 0.00 /min
                    Normed load value: 0.0 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 2 °C
                    Intake air temperature: 3 °C
                    Ambient air pressure: 1010 mbar
                    Voltage terminal 30: 11.640 V
                    Unlearning counter according OBD: 40
                    Electric auxiliary heater: shut-off conditions-Bits 0-7: 0
                    Electric auxiliary heater: shut-off conditions-Bits 0-7: 130
                    Electric auxiliary heater: relay activation-Bits 0-7: 0
                    Preheat time: 2500 ms
                    Glow status-Bits 0-7: 0
                    Glow status-Bits 0-7: 0
                    Glow cycles above temperature threshold-Bits 0-7: 0
                    Glow cycles above temperature threshold-Bits 0-7: 0
                    Glow cycles below temperature threshold-Bits 0-7: 0
                    Glow cycles below temperature threshold-Bits 0-7: 2
                    Extern.temp.sens.1 bank 1: raw value: -4.0 °C

Any tips on fixing? Is it a new glow plug required? Are they straightforward to replace, don't requiring any 'coding' or anything like that?

TIA

[annodomini2]

First (if possible) swap the glow plug lead with the one next to it, clear the code and test again (run the engine).

A) If it's the plug, the code will move.

B) If it's the wire it will stay the same.

Swapping the plug is usually just remove and replace, although make sure the engine is hot before trying to remove the plug.

I don't know that specific engine, but don't try and force them if they won't release easily as a general rule of thumb, glowplugs have a tendency to snap if over torqued.

[Drive Blind]

thanks for the reply,

I've had a closer look and there isn't enough slack on the wires to swap them about.

Also noticed that cylinder 3 plug looks different from the other 3. I assumed they would all be the same?

Looks straight forward to swap but I need to get a can of compressed air or similar first. The recess for the plug is all full of crud and I don't want that falling inside the engine.

[stevemcs]

Its fairly common and they are cheap enough, just replace it. If you want to test it hook it up to a battery, if it glows its working.

[AJB88]

Usually replace the plugs then if that doesnt resolve it then replace the harness.

[Drive Blind]

to conclude (hopefully)

I got a glow plug from ECP ~ £13. The original item was bosch so I got another bosch.
Error code cleared and it hasn't reappeared.

[annodomini2]

Drive Blind said:

to conclude (hopefully)

I got a glow plug from ECP ~ £13. The original item was bosch so I got another bosch.
Error code cleared and it hasn't reappeared.