My 18 plate octavia 1.6 tdi goes into limp mode at around 2000 revs and the yellow flashing twirling light appears. When I turn ignition off it rectifies itself but as soon as I get up to the 2000 rpm it happens again, help me please (car is out of warranty)

I have exactly the same issue, with 2012  Octavia 1.6 TDI. Car starts fine. It might be ambient temperature dependent, when very cold the car starts up normally then flashing coil lights up during driving.

Both of you need to get an OBD2 scan done as there are many different reasons why an engine will go into limp mode.

Thanks, will do

So the good news it that OBD reader sourced and fault diagnosed. The bad news is EGR valve. As mentioned before, on my Octy the problem is ambient temperature related. This afternoon ( i.e. not frosty) when starting car and before hooking up OBD, no flashing glow plug light even when >2000 rpm. Cleared the fault codes, went for a drive. Good acceleration, no problems. But on last two heavy frosty mornings the fault has occurred, possibly due to gummy stuff in EGR valve setting solid . Its quite a pricey job for dealer  or Independent to replace the valve, lots of labour to get bits off for access. I would have a go at cleaning the EGR but it's a real pig to get to. In the meantime I'll  avoid using it on a frosty morning ! Anyone knowledge about 1.6 TDI EGR faults know if a long hot drive will free up gummy valve or is it FUBAR 

Not a permanent cure but it might help out for a while you could try some spray EGR cleaner such as Wynns EGR 3 Professional which you spray through the intake. May be enough to 'soften' the residue and clearer it a bit. 

Thanks RonnieV for the reply.

The fault was subsequently expertly and kindly further diagnosed by James@Pentagon as being EGR being FUBAR and requiring replacement.

 

Our local independent VW/Audi/Skoda specialist garage performed the repair and it's now back to normal. Quite an expensive repair but much lower than franchised dealer.

Rawhide, I know the problem! Both the Lower EGR / Cooler and the Intake EGR have recently been replaced on my 2.0Tdi 4x4 along with the DPF and 8 snapped rockers. Total bill £6.1k at a VAG Specialist!! All down to a slipped timing belt.