Its not really a fix as such, as it was goosed ......................... but over a few days I noticed a slight lull in power delivery, sometimes hardly any power, sometimes turbo kicking in helped and sometimes it didn't

Cheapest way was to let the fault develop.

This threw up 01032 & 01027 faults , apologies as I use an Autel VAG505 and in the Audi settings, I am sure that the OBD2 codes were different, but alas I deleted the photos. However my VAG505 came up with the same names.

Anyway it was the EGR valve on a 75,000 mile 2.0 tdi . Take off the throttle body and then EGR itself. Unscrew the cover off the motor, take off large white middle motor, turn this upside down and inspect teeth

motor opens small flap.jpgegr number or motor number.jpgmotor.jpgtake cover and see this.jpgmotor closes small flap.jpg