My Skoda was in being diagnosed 😀 for 4 days once. It’s not simply a case of plug in and see what it says.
Apparently, after failure of my throttle sensor in Scotland, the Carlisle Skoda dealer I was recovered to replaced the sensor but also upgraded the cars software.
As a result of the upgrade the exhaust temperature sensor on the DPF didn’t think much of the upgrade and a few weeks later started throwing in odd temperature readings to the car making the engine light come on.
eventually the technician in the Skoda dealer in Manchester ( near where the car broke down) gave up and got a technician from the Czech Republic to have a look overa LAN connection. I think they reinstalled the original software!
While the car was in the Manchester Skoda dealers I visited it twice, to get stuff out of the boot etc, and had the crack with the technician. They were properly perplexed.
These things sent always as simple as one imagines as cars these days are pretty complex things.
Glad it was under warranty. 4 days on the diagnostic machine, with a technician, and a hire car for me!