Posting this as it may be of some help to others
T6 150, 12,000 miles.
Recent 350 mile drive + a couple of 1 hour plus drives ( each direction) locally.
Sat in very slow moving traffic for 20+ minutes yesterday, before full operating temperature was achieved, followed by a 1 hour drive, then parked up for approx 1 hour.
When engine was restarted the orange engine management light came on.
A further 1 hour of hard driving, revs kept artificially high (above 2000 rpm) to try and clear the issue had no effect.
Called VW assist who sent out an AA patrol, this morning, hooked up via OBD,
fault code “P040100 Exhaust-gas re-circulation low flow rate”
Fault code cleared at my request.
AA says this is quite a common problem, so much so they now have patrols with a piece of of equipment that will clean the EGR valve in situ.
This has now been booked in for insitu cleaning via mobile AA patrol( not at dealer)
Will report back after the cleaning, I’ll try to take some photos and post here.
Incidentally the AA man said VW dealer will try to clean the valve three times before replacing the EGR.