VEMO/Vierol Nox Sensor Replacement

[JN52]

Hi all,

 

Just before Christmas my engine management light came on in my A6 Allroad C7. I took it to a garage and they ran a diagnostic and told me it was a Nox sensor fault...and then told me the cost of the repair...!! I've managed to not really drive too much since then and a friend put his diagnostic tool on for me at the weekend to show me the codes. It's coming up with the following:

P067100 - Cylinder 1 Glow Plug Circuit (I'm going to change all 6 glowplugs)

P229E00 - NOx Sensor Bank 1 Sensor 2 - Circuit

P229E00 - NOx Sensor Bank 1 Sensor 2 - Circuit

P229E00 - NOx Sensor Bank 1 Sensor 2 - Circuit

P22A700 - NOx Sensor Heater Sense Bank 1 Sensor 2 - Circuit Range/Performance

I've had a look online for replacement NOx sensors and they all seem to be approx. £500, except one on Auto Doc which is VEMO part supposedly on sale from RRP of £646 down to £244. The further information on Auto Doc says the manufacturer is Vierol from Germany

This is a link to the part:  

https://autodoc.co.uk/vemo/21494755

Now...is this too good to be true? I've googled VEMO and get results that it is a Chinese brand, but the VEMO/Vierol site seems to say it is German made and to OE specs...does anyone know the truth?

Thanks in advance!

Nick