Darnell

Hi had the same problem I had it on a diagnostics machine it was the air mass flow switch hope This helps.

Thankyou for your help 

Thankyou I had to shop around but every service done since new and the way it looked swung it for me any luck finding one u like ?

Any diesel produced after 2007 will have a DPF and EGR all vehicles made before will usually have EGR only I have recently purchased an a4 avant b6 2001 1.9tdi I had never owned a diesel but has been perfect 40mpg as long as u are nice pottering around town and better mpg on motorway u have to shop around but would definatly  advise to buy.

Wanting to upgrade a few bits intercooler remap and dump valve blow off valve would really appreciate some help if anyone has already done this I have the a4 avant b6 2001 1.9tdi.