Rory Carlton

Hi just wondering how many o2 sensor on my 06 plate a4 3 litre tdi plz 

Glow plug light flashes and traction light too 

Hi I have a Audi A4 3 tdi sline Quattro on a 06 plate keep getting engine management and traction control light coming on I’ve replaced o2 lumber sensor which it said plus Accelerated module turbo pressure sensor air mass flow sensor all Best makes but drive for a few miles and engine management light and traction control light coming on but every now and again gos away but then goes back into limp mode doing my head as not a bad car any help much appreciated