Unfortunately I don't have VCDS, but I do have a Vgate iCar Pro (bluetooth) and Car Scanner (Android). Here are the codes from today:
Car Scanner ELM OBD2
Version: 1.99.5/400995/GP
DTC report
Connection profile: Skoda OBD-II / EOBD 1.0L-2.0L TSI/TFSI CAN-UDS + AT/DSG (PQ26, MQB, MLB, MSB, etc.)Date: 18/08/2023 12:28:55
VIN:
============================
OBD-II
No DTC found.
============================
19. CAN Gateway
No DTC found.
============================
09. Onboard supply control unit
No DTC found.
============================
01. Engine control unit01. Engine control unit
DTCs: 1
----------------------------
11003 [0x002AFB] Archive (inactive)
P044100: EVAP Emission Contr.Sys.Incorrect, Purge Flow
EVAP Emission Contr.Sys.Incorrect Purge Flow
P044100: EVAP Emission Contr.Sys.Incorrect, Purge Flow
Status: Test failed since last DTC clear, Test not completed during this operation cycle
============================
08. Heater and climate
No DTC found.
============================
10. Parking Assistant 2
No DTC found.
============================
15. SRS
No DTC found.
============================
17. Dashboard
No DTC found.
============================
25. Immobilizer
No DTC found.
============================
56. Head unit (MMI) (VW TP2.0)56. Head unit (MMI) (VW TP2.0)
DTCs: 1
----------------------------
00821 [0x0335]
Antenna 2 radio-R93; Antenna 2 for radio R93; Engine speed sender-G28 malfunction
Status: Pending fault present, Pending fault present during this driving cycle, Test is inhibited by other DTC, Validated and stored in non volatile memory, Validated fault present at time of request
============================
76. Parking assistant
No DTC found.
I noticed these things:
1. 11003 is new... but a quick search leads me to believe that this shouldn't prevent the engine from firing
2. 00821 could be about the radio's antenna (like I wrote in the OP), but could also be about the engine speed sender (sensor?), just like @thomasaspin suggests. I feel a bit silly for missing that, that's almost certainly it, right?
If so, is this a big job to replace? Please guide me towards the right part to order and roughly where it is under the bonnet.