The tachograph broadcasts speed and distance over the bus, so its fault pulls in codes from other systems too — from cruise control to the speed limiter. The cause is more often the sensor on the gearbox and its wiring than the instrument itself.
The modules have stopped hearing each other on the bus. Some dash readings are now made up and some functions are simply off.
You can physically drive, but do not trust the instruments, and the other codes in the list may well be false: fix the bus first, then look at the rest.
That said, the manufacturer flags this code as critical — if in doubt, it is safer to stop and check on the spot.
Check connectors and the harness: a broken CAN twisted pair takes out communication for every ECU at once.
The answer depends on the code, not the light. A yellow light is a warning; a red one means do not move. But even under a yellow light there are faults that require stopping right away — low oil pressure, overheating, lost brake pressure. Enter the code — the reference will tell you plainly whether to keep driving or stop.
Know the code number? Type it into the search — or paste the whole list from the scanner and we will show which fault is the real one.