bigjohn

Are you trying wired or wireless? Also what version of Android are you running on the phone?

This is not a new issue. I had this with my Superb 2014 mkII 1.4 tsi when I first bought it nearly new in 2015. Basically that year I was on holiday driving through Europe and passed through Luxembourg and brimmed it with cheap petrol. A little while later when driving towards the Black Forest in Germany it popped up an engine management light. As the car was under the manufacturers warranty I arranged to pop into a German Skoda dealer who thoroughly checked out the car FOC. The chief engineer took me into the workshop and despite the language difference pointed to the fuel flap and said "Von clicke HALTE". Fortunately no permanent damage at that point and it's never recurred but since then I always stop at the first click when filling up on any car. I think even my old 2001 1.4 16v mpi Octavia had and EVAP canister.

I know you've mention compression is ok but is the camshaft turning when trying to start - aka cambelt issue?

Yup, the last petrol I had with an EGR was my old Octavia 1.416v MPI. It was a PIA. Basically a motorised valve attached to the exhaust manifold (what could possibly go wrong!!) with a metal pipe running through to the throttle body. When engine was worn it coated the throttle assembly internals with carp, All the petrol's do have Crankcase Breather Check Valve though as far as I know.

It was the report of smoke behind the dash. A resistor pack can die but will fail open circuit(low fan speeds not then working). A motor can fail (consuming too much current)/ or brushes wearing out (arcing) - this MIGHT generate smoke from the motor and/or resistor pack if in use as it'll be in series to the motor. To generate smoke etc you need highish current.

and the fan?

Re-check your installation. The original style bulbs are very primitive and bulb holder connectors are horrible. You may have introduced a short. Pull both number plate lights down from the body to check with a multimeter and if ok check if they work whilst hanging down. My 2014 always had horrible connections re number light bulbs. You also may have now blown a fuse!

With the mkII check around the plenum chamber especially where water flows down into the rear of the front wing. It's prone to getting blocked/ restricted and if it does water will find it's way in somehow. Also check behind the wheel arch liner where the rear of the front wheel arch meets the sills - it's usually full of all sorts of carp and can eventually rust through. Easy job undoing a few screws each side.

A petrol smell seems to be normal with a tsi direct injection engine. My previous Superb II 1.4tsi had the same owned from near new for 10 years. It's still going strong under new ownership and a rather high mileage. I'd suggest normal.

Code P2177 and cat damaged due to over fuelling says coil pack issue to me. The over fuelling happens when the offending cylinder is misfiring . Can be weather sensitive.

I was a real fan of 99 RON Tesco Green energy E5 petrol with my Superb 1.4tsi. Made a real difference to the way it drove compared to 95 RON E10 however it didn't really improve mpg much though but really perked up the way it picked up and made it way smoother. Now I've moved onto a Swace (Toyota petrol 1.8l gen 5 hybrid gubbins) to be honest there is no discern-able difference between the 99 & 95RON petrol. I generally stick to the 95 RON/E10 especially as the price gap between the two fuels seems to be expanding.

Usually there are two lives to a wiper motor, permanent live and switched live. I'd guess you have a broken wire where loom passes from the boot lid to the body inside the flexible conduit. I am presuming this is an estate as it has a wiper but twin door is notorious for broken wires (obviously no wiper) . Basically wire quality isn't great.

Unless this was a battery issue? Years ago my son was buying a 3 year old 2016 Octavia 1.2 that was displaying strange errors. It had been at the dealer a while and the battery was basically goosed. I insisted on a new coded in battery - that was back in 2019 and it's still going strong with no further issues. Sometimes the battery can suffer when stood on a forecourt for a while.

It's the modern way - the fuel gauge fronts gubbins that smooths out small changes so that fuel gauge won't move around wildly. SO if you put a small amount of fuel in it may not register. I've experience this with a few courtesy cars where I just put in a few litres to cover a relatively low mileage covered - I always get a receipt to show the dealer but the gauge doesn't always seem to move.