I got an emissions system warning light on a trip to Prague recently on my 186,000 mileage 2016 Skoda Superb 1.6 TDi Greenline. The car drove fine, all the way back to London.

My diagnostics tablet indicated a glow plug fault on Cylinder 1. When I clear the fault it returns within a day or two, usually after a cool morning start.

I already have torque wrenches, a socket set, a set of large circlip pliers and penetrating oil.

This morning I've ordered a Bosch glow plug (BOS0250403009) from GSF, as well as a Wolfbox MF100 battery electric air blower and and Liqui Moly glow plug grease from ebay.

I'll be using the circlip pliers to help remove the electrical connection. And a combination of penetrating oil and a torque wrench and a hot engine and patience over a few days to remove the old glow plug.

Fingers crossed that this will be a straight-forward DIY job...

I would reconsider the glow plug grease. You'll get mixed reports if you should use it. It comes out of the factory without and using it changes torque settings.

I did one recently and was prepared for the worst, but once cracked, it was finger tight. I did leave it soaking in wd40 for a few days though. You can use a multimeter to check it for continuity first, just in case it’s the cable:

Congrats on it not being cylinder 3 btw.