Glow plug light & limp mode?

[delaxm]

I have a 2017 seat Leon fr 2.0TDI 184 and have started to have issues with the car going limp & flashing glow plug light, no codes recorded or when in limp mode (driving with code reader plugged in)
Seems to do it mainly under full throttle & before it's fully warmed up but has done when warm.
I had the garage fit a new fuel filter & have a look at it when mot'ed last but they couldn't get it to do it.
Any ideas ?

 

[cairus]

Which diagnostic device is in use?

 

[delaxm]

It's a cheap Foseal Wired Car OBD2 Scanner borrowed from a mate.

https://www.amazon.co.uk/Foseal-Reader-Scanner-Display-Screen/dp/B07RQCP5PY?th=1

 

[cairus]

Use something sensible like VCP or VCDS or obd11

 

[Cainy1989]

Get a proper code reader and it would mean less guess work, when I had the same symptoms as yours with my 2.0 TDI it was due to a split boost pipe, but proper codes will tell you all you need to know for the most part, theyre not that expensive be cheaper than paying a garage anyway

 

[Deca]

Had the exact same happen to mine today, first time it has happened. Stopped the car, turned it off and back on again and been fine since. Did you figure out what was up with yours?

Had a single judder, limp mode and then restarted and fine.